djvu | f53c81ff96442cb24c5b07bd480f2ff86090e12cd47029769a8cd0db3120792c

Analysis

max time kernel
147s
max time network
127s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
26-12-2024 21:29

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General

Target

4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
Size

771KB
MD5

2f32d69d9586d78506eacea4673e173d
SHA1

baabd756a8d201e6a0d37078b5d5e7bd04627c42
SHA256

4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d
SHA512

0f1252df5b9c3b76d75d791750b22b8d6e69e431a51c66425b041bdf95e8d60341f20836acf697e02c70d13407b7b17695a8e5a32245fc468212bd67f5230383
SSDEEP

12288:ARlhKek5YlQtaPdY1wJLYBhGb5Qgq94vGeufExq+XImyOepF:2GekWmqdYydYBc95CCJxq+Yse

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://fuyt.org/test1/get.php

Attributes

extension
.ghas
offline_id
miqhSGmGE63yWs53FTz0fnp8eCARpnaYE3O3p2t1
payload_url
http://zerit.top/dl/build2.exe

http://fuyt.org/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-0SLhZxAjRX 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: 0445JIjdm

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/1716-2-0x0000000001E20000-0x0000000001F3B000-memory.dmp	family_djvu
behavioral1/memory/2228-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2228-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2228-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2228-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2596-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2596-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2596-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2596-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2596-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2596-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2596-60-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2596-63-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2596-62-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2596-64-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Djvu family
djvu

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2168	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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c64b94bb-2d32-46a2-a0dd-657efbc5133e\\4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe\" --AutoStart"	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.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
5	api.2ip.ua
9	api.2ip.ua
4	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1716 set thread context of 2228	1716	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	28
PID 2968 set thread context of 2596	2968	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	32

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 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	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2228	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
2228	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
2596	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
2596	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1716 wrote to memory of 2228	1716	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	28
PID 1716 wrote to memory of 2228	1716	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	28
PID 1716 wrote to memory of 2228	1716	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	28
PID 1716 wrote to memory of 2228	1716	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	28
PID 1716 wrote to memory of 2228	1716	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	28
PID 1716 wrote to memory of 2228	1716	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	28
PID 1716 wrote to memory of 2228	1716	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	28
PID 1716 wrote to memory of 2228	1716	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	28
PID 1716 wrote to memory of 2228	1716	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	28
PID 1716 wrote to memory of 2228	1716	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	28
PID 1716 wrote to memory of 2228	1716	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	28
PID 2228 wrote to memory of 2168	2228	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	30
PID 2228 wrote to memory of 2168	2228	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	30
PID 2228 wrote to memory of 2168	2228	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	30
PID 2228 wrote to memory of 2168	2228	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	30
PID 2228 wrote to memory of 2968	2228	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	31
PID 2228 wrote to memory of 2968	2228	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	31
PID 2228 wrote to memory of 2968	2228	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	31
PID 2228 wrote to memory of 2968	2228	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	31
PID 2968 wrote to memory of 2596	2968	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	32
PID 2968 wrote to memory of 2596	2968	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	32
PID 2968 wrote to memory of 2596	2968	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	32
PID 2968 wrote to memory of 2596	2968	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	32
PID 2968 wrote to memory of 2596	2968	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	32
PID 2968 wrote to memory of 2596	2968	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	32
PID 2968 wrote to memory of 2596	2968	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	32
PID 2968 wrote to memory of 2596	2968	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	32
PID 2968 wrote to memory of 2596	2968	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	32
PID 2968 wrote to memory of 2596	2968	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	32
PID 2968 wrote to memory of 2596	2968	4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe	32

C:\Users\Admin\AppData\Local\Temp\4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
"C:\Users\Admin\AppData\Local\Temp\4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1716
- C:\Users\Admin\AppData\Local\Temp\4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
  "C:\Users\Admin\AppData\Local\Temp\4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2228
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\c64b94bb-2d32-46a2-a0dd-657efbc5133e" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2168
- - C:\Users\Admin\AppData\Local\Temp\4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
    "C:\Users\Admin\AppData\Local\Temp\4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2968
  - - C:\Users\Admin\AppData\Local\Temp\4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe
      "C:\Users\Admin\AppData\Local\Temp\4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2596

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

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
9da25ac8df9fd15f4aa32b47510d00b2

SHA1
28079e0ed6ca0b6ccad9996a8b4564542a4578fe

SHA256
b587f404fd30d9ffd6f50cb77d7f16e2a939a379b982e8c28c72893cf497a027

SHA512
1ddc103b66b387c698890422740d045e23308f9529afb07efab5641fea95a4b18da7b482cd81f6f398163f295976af9f0928c2b8b8358e8088c42369e0228d15

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

Filesize
170B

MD5
edd90fa894dce76bb8a7a7a29a4b84b7

SHA1
436254f11c5f67e2c6030a02197d73f35232ae55

SHA256
87a0fe386975b9438d593c4bb2b6fa5bc32b1b04a633f0818899b2a8b0dbe878

SHA512
04a05cabf4ba8af1fbc079cac49ad1d15e289f797331f688694c362cf6739b188e416f0fe142c701ee0919ff995d3a7886a1ead61c2eb7b572d0e2ccf039f8c6

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabA3BE.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\c64b94bb-2d32-46a2-a0dd-657efbc5133e\4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d.exe

Filesize
771KB

MD5
2f32d69d9586d78506eacea4673e173d

SHA1
baabd756a8d201e6a0d37078b5d5e7bd04627c42

SHA256
4056cae0f9787a7bd35ca868faa92310378cd0e0b1d6607e874decc68d9d7d5d

SHA512
0f1252df5b9c3b76d75d791750b22b8d6e69e431a51c66425b041bdf95e8d60341f20836acf697e02c70d13407b7b17695a8e5a32245fc468212bd67f5230383

Download Submit
memory/1716-1-0x0000000000220000-0x00000000002B1000-memory.dmp

Filesize
580KB

Download
memory/1716-2-0x0000000001E20000-0x0000000001F3B000-memory.dmp

Filesize
1.1MB

Download
memory/1716-0-0x0000000000220000-0x00000000002B1000-memory.dmp

Filesize
580KB

Download
memory/1716-7-0x0000000000220000-0x00000000002B1000-memory.dmp

Filesize
580KB

Download
memory/2228-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2228-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2228-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2228-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2228-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2596-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2596-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2596-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2596-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2596-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2596-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2596-60-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2596-63-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2596-62-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2596-64-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2968-33-0x0000000000400000-0x00000000004CB000-memory.dmp

Filesize
812KB

Download
memory/2968-28-0x0000000000400000-0x00000000004CB000-memory.dmp

Filesize
812KB

Download
memory/2968-27-0x0000000000220000-0x00000000002B1000-memory.dmp

Filesize
580KB

Download