djvu | 8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8

General

Target

8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe
Size

803KB
MD5

a5009b3523747cb1df2e6ad6856edebb
SHA1

7832c94c69898f3d940c913f7caa8e1c435deb22
SHA256

8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8
SHA512

5b8cecb00513283214ac27062c1e17f3f258321ef05c4c72527feff7e80ceb86aa1a8559892cfdf40992fae6910917eb1a7ca29752775877bfb6f894b1ea999d
SSDEEP

24576:kMf3m073KowFR7cQ1KA9HFgEvFNNoP4fXBsM:kMMou+ABvFN6AXBsM

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://sajdfue.com/test2/get.php

Attributes

extension
.uazq
offline_id
Jx0i3k2ogR5cKxX1evmz0Ex7TUxOUlnbh2dvnIt1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://sajdfue.com/files/1/build3.exe
ransomnote
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rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral1/memory/1960-2-0x0000000002330000-0x000000000244B000-memory.dmp	family_djvu
behavioral1/memory/1764-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1764-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1764-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1764-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1764-16-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3976-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3976-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3976-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3976-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3976-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3976-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3976-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3976-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3976-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3976-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3976-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

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

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-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2064	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-1-5-21-609813121-2907144057-1731107329-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\41056ddb-8f08-4c35-875d-9b24c15bd095\\8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe\" --AutoStart"	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.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
17	api.2ip.ua
6	api.2ip.ua
7	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1960 set thread context of 1764	1960	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	84
PID 4328 set thread context of 3976	4328	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	91

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1764	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe
1764	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe
3976	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe
3976	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1960 wrote to memory of 1764	1960	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	84
PID 1960 wrote to memory of 1764	1960	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	84
PID 1960 wrote to memory of 1764	1960	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	84
PID 1960 wrote to memory of 1764	1960	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	84
PID 1960 wrote to memory of 1764	1960	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	84
PID 1960 wrote to memory of 1764	1960	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	84
PID 1960 wrote to memory of 1764	1960	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	84
PID 1960 wrote to memory of 1764	1960	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	84
PID 1960 wrote to memory of 1764	1960	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	84
PID 1960 wrote to memory of 1764	1960	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	84
PID 1764 wrote to memory of 2064	1764	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	88
PID 1764 wrote to memory of 2064	1764	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	88
PID 1764 wrote to memory of 2064	1764	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	88
PID 1764 wrote to memory of 4328	1764	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	89
PID 1764 wrote to memory of 4328	1764	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	89
PID 1764 wrote to memory of 4328	1764	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	89
PID 4328 wrote to memory of 3976	4328	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	91
PID 4328 wrote to memory of 3976	4328	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	91
PID 4328 wrote to memory of 3976	4328	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	91
PID 4328 wrote to memory of 3976	4328	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	91
PID 4328 wrote to memory of 3976	4328	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	91
PID 4328 wrote to memory of 3976	4328	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	91
PID 4328 wrote to memory of 3976	4328	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	91
PID 4328 wrote to memory of 3976	4328	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	91
PID 4328 wrote to memory of 3976	4328	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	91
PID 4328 wrote to memory of 3976	4328	8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe	91

C:\Users\Admin\AppData\Local\Temp\8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe
"C:\Users\Admin\AppData\Local\Temp\8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1960
- C:\Users\Admin\AppData\Local\Temp\8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe
  "C:\Users\Admin\AppData\Local\Temp\8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1764
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\41056ddb-8f08-4c35-875d-9b24c15bd095" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2064
- - C:\Users\Admin\AppData\Local\Temp\8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe
    "C:\Users\Admin\AppData\Local\Temp\8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4328
  - - C:\Users\Admin\AppData\Local\Temp\8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe
      "C:\Users\Admin\AppData\Local\Temp\8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
1KB

MD5
a8cb187f51e9474f4849be9081686a12

SHA1
449935cb209de8c3d86e6a89e9641fd0c75a46e9

SHA256
0bb3a455f621cc81eb3a688d1aea6942a3b3f8a8acd39c4f7790ee09ca003c66

SHA512
31e23ccfea7f6fde71959b7f1845ff6e9b8b3a0251df38eaf409293bc537b9c23862af74da20afa646254179c7f86e64473f51da42d0f971ef8d7da499c66f92

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
724B

MD5
8202a1cd02e7d69597995cabbe881a12

SHA1
8858d9d934b7aa9330ee73de6c476acf19929ff6

SHA256
58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

SHA512
97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
410B

MD5
9a67598be134c41f67f0945ef2aff94d

SHA1
379db90ea98be1a18f4db146ccc12c23cd7ecbe9

SHA256
dd50a4c19662f103bab8ecfdb1eefdd5b4c23cb7724b2c03c6cc9d813b81ae55

SHA512
8bba86bf4cf58178afd737bf337c3fa38b95fafcb52bc7187c73820aa73b769b81b79ade916dc7c48eef0f3c4ee860c762651c9eca3947fbc82195c4e4530f73

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
392B

MD5
0327dc7e4684728afe8437d700b78c13

SHA1
34d1856169556d078627fda467aa6089e0c4bb75

SHA256
eaffe3da295d0e65487cbec2519084c2e127d8830c1a4bd001b1bc01945e7719

SHA512
23bea69db9f6214ef6f966f3c4a167da0a5446a50c07fa6c3423c009bc523e5cac4945a2c6b4114e64d30ac5e089a1575f9c204c1ce861f24927248f3b1e9ce4

Download Submit
C:\Users\Admin\AppData\Local\41056ddb-8f08-4c35-875d-9b24c15bd095\8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8.exe

Filesize
803KB

MD5
a5009b3523747cb1df2e6ad6856edebb

SHA1
7832c94c69898f3d940c913f7caa8e1c435deb22

SHA256
8e78ead7490fc5b7bd07cf85f279fd70cf6b9b1080b5a129a1a1d455ce4ce4d8

SHA512
5b8cecb00513283214ac27062c1e17f3f258321ef05c4c72527feff7e80ceb86aa1a8559892cfdf40992fae6910917eb1a7ca29752775877bfb6f894b1ea999d

Download Submit
memory/1764-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1764-16-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1764-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1764-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1764-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1960-1-0x0000000002290000-0x0000000002328000-memory.dmp

Filesize
608KB

Download
memory/1960-2-0x0000000002330000-0x000000000244B000-memory.dmp

Filesize
1.1MB

Download
memory/3976-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3976-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3976-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3976-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3976-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3976-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3976-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3976-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3976-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3976-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3976-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4328-18-0x0000000002140000-0x00000000021D6000-memory.dmp

Filesize
600KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads