djvu | a706c1d0d748f3847de78ea63f7b3b6a6336f5750c84241e6b7fd0d45cd43765

General

Target

file.exe
Size

758KB
MD5

147f66a4ab5d877e9cd347e9c16fcd72
SHA1

37e9024c5d64d51d01a1b1c9b3f1b5758693cedb
SHA256

a706c1d0d748f3847de78ea63f7b3b6a6336f5750c84241e6b7fd0d45cd43765
SHA512

20ccb69ce1ced51fec5b87abfaa7418321700e28c2e8f23251564276662ba000479ea6d387f66e45325bae79fec078f5664b3ba925f90f1041213a097c783357
SSDEEP

12288:uA8auX4Zp7MC2bkWKvkfsIvkjAvh1rJyjvQe4XcIVvfdquBAsbDG:uZXcV7kkkfsI2qXF8vQe4XcILAs+

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.yzqe
offline_id
x2zqmFxw8ydx3wkiEeNayQ64Eyg2U5MS31sTegt1
payload_url
ransomnote
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rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

resource	yara_rule
behavioral2/memory/2620-2-0x0000000002500000-0x000000000261B000-memory.dmp	family_djvu
behavioral2/memory/1192-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1192-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1192-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1192-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1192-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1964-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1964-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1964-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1964-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1964-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1964-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1964-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1964-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1964-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1964-38-0x0000000000400000-0x0000000000537000-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-1-5-21-3811856890-180006922-3689258494-1000\Control Panel\International\Geo\Nation	file.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2748	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-1-5-21-3811856890-180006922-3689258494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e8c9b643-b917-4048-880a-98267955af30\\file.exe\" --AutoStart"	file.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
33	api.2ip.ua
34	api.2ip.ua
39	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2620 set thread context of 1192	2620	file.exe	96
PID 3540 set thread context of 1964	3540	file.exe	102

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3811856890-180006922-3689258494-1000_Classes\Local Settings	OpenWith.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1192	file.exe
1192	file.exe
1964	file.exe
1964	file.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4092	OpenWith.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2620 wrote to memory of 1192	2620	file.exe	96
PID 2620 wrote to memory of 1192	2620	file.exe	96
PID 2620 wrote to memory of 1192	2620	file.exe	96
PID 2620 wrote to memory of 1192	2620	file.exe	96
PID 2620 wrote to memory of 1192	2620	file.exe	96
PID 2620 wrote to memory of 1192	2620	file.exe	96
PID 2620 wrote to memory of 1192	2620	file.exe	96
PID 2620 wrote to memory of 1192	2620	file.exe	96
PID 2620 wrote to memory of 1192	2620	file.exe	96
PID 2620 wrote to memory of 1192	2620	file.exe	96
PID 1192 wrote to memory of 2748	1192	file.exe	98
PID 1192 wrote to memory of 2748	1192	file.exe	98
PID 1192 wrote to memory of 2748	1192	file.exe	98
PID 1192 wrote to memory of 3540	1192	file.exe	99
PID 1192 wrote to memory of 3540	1192	file.exe	99
PID 1192 wrote to memory of 3540	1192	file.exe	99
PID 3540 wrote to memory of 1964	3540	file.exe	102
PID 3540 wrote to memory of 1964	3540	file.exe	102
PID 3540 wrote to memory of 1964	3540	file.exe	102
PID 3540 wrote to memory of 1964	3540	file.exe	102
PID 3540 wrote to memory of 1964	3540	file.exe	102
PID 3540 wrote to memory of 1964	3540	file.exe	102
PID 3540 wrote to memory of 1964	3540	file.exe	102
PID 3540 wrote to memory of 1964	3540	file.exe	102
PID 3540 wrote to memory of 1964	3540	file.exe	102
PID 3540 wrote to memory of 1964	3540	file.exe	102

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2620
- C:\Users\Admin\AppData\Local\Temp\file.exe
  "C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1192
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\e8c9b643-b917-4048-880a-98267955af30" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2748
- - C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3540
  - - C:\Users\Admin\AppData\Local\Temp\file.exe
      "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:1964

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:4092

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
106b4bedd869d97baa93b696d064f882

SHA1
c52f044ee074ad5bb66eafb848b2ae7c133cbd2e

SHA256
5e793cb9dc61fe524fb971cd0c8dca4bc226cf0e9618ec3360a2bb7285f81a99

SHA512
f0b3aaaa71f2786f5144d464af5846f0411743c4228a6c68ce13b13c5a1c05b2c3c37d62007eba08541fb5fe950943800bdce7077d21c21eac330654c8b50a60

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
b9b646989a53a57da86a361770c8ec1c

SHA1
30350f5765dc5ffebd1706eebb79e097c2ce2beb

SHA256
2e84d58645f6caa9cde4d621d8a4b929025fac7c2a95aedab351c3759be95396

SHA512
adbb45800870cf2f5a8e360248bb8b9a35dbba8f43496c4b29d5d7d0a37e8117758cf49e7f1926d61ecba08ea132df79aaa566d8a867cd25fedd2d81daa65e62

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

Filesize
392B

MD5
7d482eabe2793f37a19b55a61faab2a0

SHA1
43b81472f13fad1c6a85477a59e0ec3fb2117bbf

SHA256
1acd8a40815eaddbe9d8bdfc89fd662ff44f156b7516380dcbb79ba8121ec4be

SHA512
3642a4c9eb24fcb33f4945a7fc12ce53438bd4ccea07566ae9eb7ada972c5b1f8a5b592efa23df07800be9cb0817734388be75ea374df26a28e3b2db498cfddf

Download Submit
C:\Users\Admin\AppData\Local\e8c9b643-b917-4048-880a-98267955af30\file.exe

Filesize
758KB

MD5
147f66a4ab5d877e9cd347e9c16fcd72

SHA1
37e9024c5d64d51d01a1b1c9b3f1b5758693cedb

SHA256
a706c1d0d748f3847de78ea63f7b3b6a6336f5750c84241e6b7fd0d45cd43765

SHA512
20ccb69ce1ced51fec5b87abfaa7418321700e28c2e8f23251564276662ba000479ea6d387f66e45325bae79fec078f5664b3ba925f90f1041213a097c783357

Download Submit
memory/1192-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1192-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1192-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1192-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1192-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1964-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1964-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1964-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1964-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1964-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1964-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1964-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1964-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1964-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1964-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2620-1-0x0000000002460000-0x00000000024F6000-memory.dmp

Filesize
600KB

Download
memory/2620-2-0x0000000002500000-0x000000000261B000-memory.dmp

Filesize
1.1MB

Download
memory/3540-18-0x0000000002390000-0x0000000002426000-memory.dmp

Filesize
600KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads