djvu | f911d9fe94c6aa35874faa758432168c6846c24b010e8f351f874ac6830c2a2d

Analysis

max time kernel
146s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
29/11/2024, 18:04

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General

Target

b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
Size

831KB
MD5

b2f294347754b834dfa0798a7f80dc89
SHA1

a62a785570f2302af02fa981a279afcb371c7d49
SHA256

f911d9fe94c6aa35874faa758432168c6846c24b010e8f351f874ac6830c2a2d
SHA512

4e5195423198d4ea5f1742e9ded4598153a1a40ae1df65796cd457c75ffdeb433cebf85d6fcc5b527d2d2409487104386ad6073e071e6843d712f05c114a265d
SSDEEP

24576:htVEx77FqKymt0pA+zuk4Bce6nonkZI98UWcPUIX:vk7FcmwA+zF4WXoR98A

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://astdg.top/fhsgtsspen6/get.php

Attributes

extension
.reqg
offline_id
ioYmb0jtMMtue7xjmkS3WQWGWLR8FTQhb2giQtt1
payload_url
http://securebiz.org/dl/build2.exe

http://astdg.top/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. You can get and look video overview decrypt tool: https://we.tl/t-jTbSQT8ApY Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. 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: 0324gDrgo

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

resource	yara_rule
behavioral2/memory/3672-2-0x0000000000B30000-0x0000000000C4B000-memory.dmp	family_djvu
behavioral2/memory/3980-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3980-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3980-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3980-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3980-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1652-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1652-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1652-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3208-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3208-43-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3208-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3208-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3208-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3208-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3208-351-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Djvu family
djvu
Renames multiple (51) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
1188	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
3208	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2592	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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\41a18433-b16f-45d0-a8d4-7eab04f345be\\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe\" --AutoStart"	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe

Looks up external IP address via web service 3 IoCs

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

flow	ioc
3	api.2ip.ua
4	api.2ip.ua
48	api.2ip.ua

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3672 set thread context of 3980	3672	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	85
PID 1472 set thread context of 1652	1472	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	91
PID 1188 set thread context of 3208	1188	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.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
872	1652	WerFault.exe	91

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3980	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
3980	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
3208	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
3208	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
3208	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
3208	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 3672 wrote to memory of 3980	3672	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	85
PID 3672 wrote to memory of 3980	3672	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	85
PID 3672 wrote to memory of 3980	3672	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	85
PID 3672 wrote to memory of 3980	3672	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	85
PID 3672 wrote to memory of 3980	3672	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	85
PID 3672 wrote to memory of 3980	3672	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	85
PID 3672 wrote to memory of 3980	3672	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	85
PID 3672 wrote to memory of 3980	3672	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	85
PID 3672 wrote to memory of 3980	3672	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	85
PID 3672 wrote to memory of 3980	3672	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	85
PID 3980 wrote to memory of 2592	3980	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	87
PID 3980 wrote to memory of 2592	3980	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	87
PID 3980 wrote to memory of 2592	3980	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	87
PID 3980 wrote to memory of 1472	3980	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	88
PID 3980 wrote to memory of 1472	3980	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	88
PID 3980 wrote to memory of 1472	3980	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	88
PID 1472 wrote to memory of 1652	1472	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	91
PID 1472 wrote to memory of 1652	1472	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	91
PID 1472 wrote to memory of 1652	1472	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	91
PID 1472 wrote to memory of 1652	1472	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	91
PID 1472 wrote to memory of 1652	1472	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	91
PID 1472 wrote to memory of 1652	1472	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	91
PID 1472 wrote to memory of 1652	1472	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	91
PID 1472 wrote to memory of 1652	1472	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	91
PID 1472 wrote to memory of 1652	1472	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	91
PID 1472 wrote to memory of 1652	1472	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	91
PID 1188 wrote to memory of 3208	1188	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	113
PID 1188 wrote to memory of 3208	1188	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	113
PID 1188 wrote to memory of 3208	1188	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	113
PID 1188 wrote to memory of 3208	1188	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	113
PID 1188 wrote to memory of 3208	1188	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	113
PID 1188 wrote to memory of 3208	1188	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	113
PID 1188 wrote to memory of 3208	1188	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	113
PID 1188 wrote to memory of 3208	1188	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	113
PID 1188 wrote to memory of 3208	1188	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	113
PID 1188 wrote to memory of 3208	1188	b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe	113

C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3672
- C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3980
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\41a18433-b16f-45d0-a8d4-7eab04f345be" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2592
- - C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1472
  - - C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      PID:1652
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1652 -s 572
        5⤵
        Program crash
        
        PID:872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1652 -ip 1652
1⤵
PID:3536

C:\Users\Admin\AppData\Local\41a18433-b16f-45d0-a8d4-7eab04f345be\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
C:\Users\Admin\AppData\Local\41a18433-b16f-45d0-a8d4-7eab04f345be\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe --Task
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1188
- C:\Users\Admin\AppData\Local\41a18433-b16f-45d0-a8d4-7eab04f345be\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\41a18433-b16f-45d0-a8d4-7eab04f345be\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe --Task
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3208

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

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
1KB

MD5
67e486b2f148a3fca863728242b6273e

SHA1
452a84c183d7ea5b7c015b597e94af8eef66d44a

SHA256
facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb

SHA512
d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

Filesize
436B

MD5
971c514f84bba0785f80aa1c23edfd79

SHA1
732acea710a87530c6b08ecdf32a110d254a54c8

SHA256
f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

SHA512
43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
174B

MD5
af07af546da358f5c2944c628c7161ab

SHA1
9c89cbe9d3b6ad827e1e74805ef4c7881fc026e9

SHA256
a00f5931cd2666a25850b9dea18242f7a64ce2866b443c858aac38c18315cd26

SHA512
e5f3cfade8373b00a2f5c30f66728967242f2825cdc09a512ceb0ec9752ae65dedab035264f30945acf38ae9aea75d93f59bcdaf26704294aa8fb5aff78c56ed

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

Filesize
170B

MD5
c1291351ccc7724b4e3b7ec9b066dc96

SHA1
57086b3ad21bb07586b58f4002ff9491442e4682

SHA256
3650a74da89e0622d8103958f3a607a24496c1d599d84631d4f991564c4aabcc

SHA512
e13b9d0b19553e7d58f89b8516c2d707cb0ce446b126d1dde969acd305e49a467a3e56cb6c6c31f587a0888a7c5051ae92875fd202ef517bedcf56f3d57b1a42

Download Submit
C:\Users\Admin\AppData\Local\41a18433-b16f-45d0-a8d4-7eab04f345be\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe

Filesize
831KB

MD5
b2f294347754b834dfa0798a7f80dc89

SHA1
a62a785570f2302af02fa981a279afcb371c7d49

SHA256
f911d9fe94c6aa35874faa758432168c6846c24b010e8f351f874ac6830c2a2d

SHA512
4e5195423198d4ea5f1742e9ded4598153a1a40ae1df65796cd457c75ffdeb433cebf85d6fcc5b527d2d2409487104386ad6073e071e6843d712f05c114a265d

Download Submit
memory/1472-23-0x0000000000400000-0x0000000000986000-memory.dmp

Filesize
5.5MB

Download
memory/1472-25-0x0000000000400000-0x0000000000986000-memory.dmp

Filesize
5.5MB

Download
memory/1652-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1652-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1652-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3208-43-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3208-351-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3208-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3208-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3208-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3208-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3208-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3672-1-0x0000000000A60000-0x0000000000AF6000-memory.dmp

Filesize
600KB

Download
memory/3672-2-0x0000000000B30000-0x0000000000C4B000-memory.dmp

Filesize
1.1MB

Download
memory/3980-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3980-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3980-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3980-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3980-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download