djvu | c42f13321ee181c267897c3247a66bfba3398d7ea2723aee7cc530649feba589

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26/03/2024, 22:08

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General

Target

c42f13321ee181c267897c3247a66bfba3398d7ea2723aee7cc530649feba589.exe
Size

310KB
MD5

dbb56492a396cdf8bdcb2f9cdabb7c0f
SHA1

af8b1578f4b99f56acbdf129ac212a2b860cb134
SHA256

c42f13321ee181c267897c3247a66bfba3398d7ea2723aee7cc530649feba589
SHA512

c33edfde4f75a3667a7b27bbe0f023ba4d2255d2a8ea5918cb9291af2d49f39ace965eaca50981bec45d3fbc9ec437b41f3d18631adc34b576a05919093dd560
SSDEEP

3072:sx7/kXDb/S+1C+SUoIiXUd4fnMm68HMK4zNUQ7mrhsb4LNeIIeuTTSz+dcFjTmc:s1eCrUd4L0NUQytsb4Lbu3Y+dcFjT

Score

10^/10

djvu lumma smokeloader pub1 backdoor discovery persistence ransomware stealer trojan

Malware Config

Extracted

Family

smokeloader

Botnet

pub1

Extracted

Family

smokeloader

Version

2022

http://trad-einmyus.com/index.php

http://tradein-myus.com/index.php

http://trade-inmyus.com/index.php

rc4.i32

Extracted

Family

djvu

http://sajdfue.com/test1/get.php

Attributes

extension
.vook
offline_id
1eSPzWRaNslCgtjBZfL5pzvovoiaVI4IZSnvAwt1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://sajdfue.com/files/1/build3.exe
ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/3ed7a617738550b0a00c5aa231c0752020240316170955/d71ce1 Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0857PsawqS

rsa_pubkey.plain

Extracted

Family

lumma

https://resergvearyinitiani.shop/api

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral1/memory/2032-21-0x00000000028B0000-0x00000000029CB000-memory.dmp	family_djvu
behavioral1/memory/2476-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2476-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2476-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2476-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2476-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2860-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2860-45-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2860-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Lumma Stealer
An infostealer written in C++ first seen in August 2022.
stealer lumma
SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
Downloads MZ/PE file

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	1E71.exe

Deletes itself 1 IoCs

pid	Process
3452	Process not Found

Executes dropped EXE 6 IoCs

pid	Process
2032	1E71.exe
2476	1E71.exe
760	1E71.exe
2860	1E71.exe
4160	cwgjwjw
4728	1AD3.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4164	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\0ab943dc-3f6d-468d-b637-896c5887dc3b\\1E71.exe\" --AutoStart"	1E71.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
127	api.2ip.ua
128	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2032 set thread context of 2476	2032	1E71.exe	107
PID 760 set thread context of 2860	760	1E71.exe	113

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3492	2860	WerFault.exe	113

Checks SCSI registry key(s) 3 TTPs 6 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	c42f13321ee181c267897c3247a66bfba3398d7ea2723aee7cc530649feba589.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	c42f13321ee181c267897c3247a66bfba3398d7ea2723aee7cc530649feba589.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	c42f13321ee181c267897c3247a66bfba3398d7ea2723aee7cc530649feba589.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	cwgjwjw
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	cwgjwjw
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	cwgjwjw

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2012	c42f13321ee181c267897c3247a66bfba3398d7ea2723aee7cc530649feba589.exe
2012	c42f13321ee181c267897c3247a66bfba3398d7ea2723aee7cc530649feba589.exe
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
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3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
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3452	Process not Found
3452	Process not Found
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3452	Process not Found
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3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found
3452	Process not Found

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2012	c42f13321ee181c267897c3247a66bfba3398d7ea2723aee7cc530649feba589.exe
4160	cwgjwjw

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3452	Process not Found
Token: SeCreatePagefilePrivilege	3452	Process not Found
Token: SeShutdownPrivilege	3452	Process not Found
Token: SeCreatePagefilePrivilege	3452	Process not Found
Token: SeShutdownPrivilege	3452	Process not Found
Token: SeCreatePagefilePrivilege	3452	Process not Found
Token: SeShutdownPrivilege	3452	Process not Found
Token: SeCreatePagefilePrivilege	3452	Process not Found

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3452	Process not Found

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 3452 wrote to memory of 876	3452	Process not Found	100
PID 3452 wrote to memory of 876	3452	Process not Found	100
PID 876 wrote to memory of 3104	876	cmd.exe	102
PID 876 wrote to memory of 3104	876	cmd.exe	102
PID 3452 wrote to memory of 2032	3452	Process not Found	106
PID 3452 wrote to memory of 2032	3452	Process not Found	106
PID 3452 wrote to memory of 2032	3452	Process not Found	106
PID 2032 wrote to memory of 2476	2032	1E71.exe	107
PID 2032 wrote to memory of 2476	2032	1E71.exe	107
PID 2032 wrote to memory of 2476	2032	1E71.exe	107
PID 2032 wrote to memory of 2476	2032	1E71.exe	107
PID 2032 wrote to memory of 2476	2032	1E71.exe	107
PID 2032 wrote to memory of 2476	2032	1E71.exe	107
PID 2032 wrote to memory of 2476	2032	1E71.exe	107
PID 2032 wrote to memory of 2476	2032	1E71.exe	107
PID 2032 wrote to memory of 2476	2032	1E71.exe	107
PID 2032 wrote to memory of 2476	2032	1E71.exe	107
PID 2476 wrote to memory of 4164	2476	1E71.exe	110
PID 2476 wrote to memory of 4164	2476	1E71.exe	110
PID 2476 wrote to memory of 4164	2476	1E71.exe	110
PID 2476 wrote to memory of 760	2476	1E71.exe	111
PID 2476 wrote to memory of 760	2476	1E71.exe	111
PID 2476 wrote to memory of 760	2476	1E71.exe	111
PID 760 wrote to memory of 2860	760	1E71.exe	113
PID 760 wrote to memory of 2860	760	1E71.exe	113
PID 760 wrote to memory of 2860	760	1E71.exe	113
PID 760 wrote to memory of 2860	760	1E71.exe	113
PID 760 wrote to memory of 2860	760	1E71.exe	113
PID 760 wrote to memory of 2860	760	1E71.exe	113
PID 760 wrote to memory of 2860	760	1E71.exe	113
PID 760 wrote to memory of 2860	760	1E71.exe	113
PID 760 wrote to memory of 2860	760	1E71.exe	113
PID 760 wrote to memory of 2860	760	1E71.exe	113
PID 3452 wrote to memory of 4728	3452	Process not Found	122
PID 3452 wrote to memory of 4728	3452	Process not Found	122
PID 3452 wrote to memory of 4728	3452	Process not Found	122
PID 3452 wrote to memory of 4336	3452	Process not Found	125
PID 3452 wrote to memory of 4336	3452	Process not Found	125
PID 4336 wrote to memory of 2864	4336	cmd.exe	127
PID 4336 wrote to memory of 2864	4336	cmd.exe	127

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\c42f13321ee181c267897c3247a66bfba3398d7ea2723aee7cc530649feba589.exe
"C:\Users\Admin\AppData\Local\Temp\c42f13321ee181c267897c3247a66bfba3398d7ea2723aee7cc530649feba589.exe"
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:2012

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\8349.bat" "
1⤵
- Suspicious use of WriteProcessMemory
PID:876
- C:\Windows\system32\reg.exe
  reg add "HKEY_CURRENT_USER\Software\clicker\key" /v primary /t REG_DWORD /d 1
  2⤵
  PID:3104

C:\Users\Admin\AppData\Local\Temp\1E71.exe
C:\Users\Admin\AppData\Local\Temp\1E71.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2032
- C:\Users\Admin\AppData\Local\Temp\1E71.exe
  C:\Users\Admin\AppData\Local\Temp\1E71.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2476
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\0ab943dc-3f6d-468d-b637-896c5887dc3b" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4164
- - C:\Users\Admin\AppData\Local\Temp\1E71.exe
    "C:\Users\Admin\AppData\Local\Temp\1E71.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:760
  - - C:\Users\Admin\AppData\Local\Temp\1E71.exe
      "C:\Users\Admin\AppData\Local\Temp\1E71.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Executes dropped EXE
      PID:2860
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2860 -s 568
        5⤵
        Program crash
        
        PID:3492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2860 -ip 2860
1⤵
PID:2892

C:\Users\Admin\AppData\Roaming\cwgjwjw
C:\Users\Admin\AppData\Roaming\cwgjwjw
1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:4160

C:\Users\Admin\AppData\Local\Temp\1AD3.exe
C:\Users\Admin\AppData\Local\Temp\1AD3.exe
1⤵
- Executes dropped EXE
PID:4728

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\5A9C.bat" "
1⤵
- Suspicious use of WriteProcessMemory
PID:4336
- C:\Windows\system32\reg.exe
  reg add "HKEY_CURRENT_USER\Software\clicker\key" /v primary /t REG_DWORD /d 1
  2⤵
  PID:2864

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\1AD3.exe

Filesize
6.5MB

MD5
9e52aa572f0afc888c098db4c0f687ff

SHA1
ef7c2bb222e69ad0e10c8686eb03dcbee7933c2b

SHA256
4a40f9d491f09521f4b0c6076a0eb488f6d8e1cf4b67aa6569c2ccce13556443

SHA512
d0991e682ae8c954721e905753b56c01f91b85313beb9996331793c3efa8acc13d574ef5ba44853ecc3e05822931ed655bad1924fa11b774a43e015f42185f62

Download Submit
C:\Users\Admin\AppData\Local\Temp\1E71.exe

Filesize
810KB

MD5
37c43f4a7a7b1b925455c31aaaacaeb2

SHA1
6bde4b5b4c1b774a2122980db20b087f8f7987c3

SHA256
564d83e901fed9fa45ca7a8f20743d31056e6986c23be01acdcf0ff66930c35c

SHA512
fc19d03d63d807f10fa1d485448755077fcf97b0f7d17a4d8010f307cd64842dc8ef0ffef7e8aa579724c0d51d65f163fd9f57ca7877ffedb86f94f1d637311d

Download Submit
C:\Users\Admin\AppData\Local\Temp\8349.bat

Filesize
77B

MD5
55cc761bf3429324e5a0095cab002113

SHA1
2cc1ef4542a4e92d4158ab3978425d517fafd16d

SHA256
d6cceb3c71b80403364bf142f2fa4624ee0be36a49bac25ed45a497cf1ce9c3a

SHA512
33f9f5cad22d291077787c7df510806e4ac31f453d288712595af6debe579fabed6cdf4662e46e6fa94de135b161e739f55cfae05c36c87af85ed6a6ad1c9155

Download Submit
C:\Users\Admin\AppData\Roaming\cwgjwjw

Filesize
310KB

MD5
dbb56492a396cdf8bdcb2f9cdabb7c0f

SHA1
af8b1578f4b99f56acbdf129ac212a2b860cb134

SHA256
c42f13321ee181c267897c3247a66bfba3398d7ea2723aee7cc530649feba589

SHA512
c33edfde4f75a3667a7b27bbe0f023ba4d2255d2a8ea5918cb9291af2d49f39ace965eaca50981bec45d3fbc9ec437b41f3d18631adc34b576a05919093dd560

Download Submit
memory/760-41-0x0000000002830000-0x00000000028CA000-memory.dmp

Filesize
616KB

Download
memory/2012-2-0x0000000000C80000-0x0000000000C8B000-memory.dmp

Filesize
44KB

Download
memory/2012-3-0x0000000000400000-0x0000000000AF7000-memory.dmp

Filesize
7.0MB

Download
memory/2012-5-0x0000000000400000-0x0000000000AF7000-memory.dmp

Filesize
7.0MB

Download
memory/2012-1-0x0000000000B70000-0x0000000000C70000-memory.dmp

Filesize
1024KB

Download
memory/2032-20-0x00000000027E0000-0x000000000287A000-memory.dmp

Filesize
616KB

Download
memory/2032-21-0x00000000028B0000-0x00000000029CB000-memory.dmp

Filesize
1.1MB

Download
memory/2476-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2476-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2476-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2476-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2476-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2860-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2860-45-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2860-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3452-55-0x0000000003380000-0x0000000003396000-memory.dmp

Filesize
88KB

Download
memory/3452-4-0x0000000002E10000-0x0000000002E26000-memory.dmp

Filesize
88KB

Download
memory/4160-53-0x0000000000C20000-0x0000000000D20000-memory.dmp

Filesize
1024KB

Download
memory/4160-54-0x0000000000400000-0x0000000000AF7000-memory.dmp

Filesize
7.0MB

Download
memory/4160-58-0x0000000000400000-0x0000000000AF7000-memory.dmp

Filesize
7.0MB

Download
memory/4728-64-0x0000000000E90000-0x0000000001B75000-memory.dmp

Filesize
12.9MB

Download
memory/4728-69-0x0000000001FC0000-0x0000000001FC1000-memory.dmp

Filesize
4KB

Download
memory/4728-72-0x0000000000E90000-0x0000000001B75000-memory.dmp

Filesize
12.9MB

Download
memory/4728-71-0x00000000020C0000-0x00000000020C1000-memory.dmp

Filesize
4KB

Download
memory/4728-70-0x00000000020B0000-0x00000000020B1000-memory.dmp

Filesize
4KB

Download
memory/4728-73-0x0000000003AB0000-0x0000000003AB1000-memory.dmp

Filesize
4KB

Download
memory/4728-74-0x0000000003BF0000-0x0000000003BF1000-memory.dmp

Filesize
4KB

Download
memory/4728-75-0x0000000003C00000-0x0000000003C01000-memory.dmp

Filesize
4KB

Download
memory/4728-76-0x0000000000E90000-0x0000000001B75000-memory.dmp

Filesize
12.9MB

Download
memory/4728-77-0x0000000003C10000-0x0000000003C11000-memory.dmp

Filesize
4KB

Download
memory/4728-78-0x0000000003C10000-0x0000000003C11000-memory.dmp

Filesize
4KB

Download
memory/4728-79-0x0000000003C10000-0x0000000003C11000-memory.dmp

Filesize
4KB

Download
memory/4728-80-0x0000000000E90000-0x0000000001B75000-memory.dmp

Filesize
12.9MB

Download