djvu | 6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744

General

Target

6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe
Size

723KB
MD5

8846a2226f2a09cc1aa53dc160896323
SHA1

f4dcf8c8b14454d212e4618c1c34a57e2f86e88a
SHA256

6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744
SHA512

f0d15232a9662986f9966a245ebe25746b02568587c00136911d8d7aab9d6819d498f154316e9bc9a08bb7a2c69d87a652d2a8c1f8dc30c46a88cb9a90de0981
SSDEEP

12288:h+dcKHCFOdfhiv3uHLxq+8pjWRoRLqztBKELuWKhb23dKEn/1opYJGix/X0:h+uTz33+8R8/pPKhb4dLopYJGEX0

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.azhi
offline_id
GQ9DjFmWFDqpsyzsOnaxE1Xr4MPL1dG4vPfPDNt1
payload_url
http://colisumy.com/dl/build2.exe

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

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/3720-1-0x00000000022E0000-0x00000000023FB000-memory.dmp	family_djvu
behavioral2/memory/4456-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4456-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4456-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4456-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4456-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3248-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3248-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3248-22-0x0000000000400000-0x0000000000537000-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-1-5-21-919254492-3979293997-764407192-1000\Control Panel\International\Geo\Nation	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4108	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-1-5-21-919254492-3979293997-764407192-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\90e734e1-79b5-4694-acef-d0e3e4111b1e\\6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe\" --AutoStart"	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.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
44	api.2ip.ua
46	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3720 set thread context of 4456	3720	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	92
PID 3420 set thread context of 3248	3420	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	104

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
3628	3248	WerFault.exe	104

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4456	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe
4456	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3720 wrote to memory of 4456	3720	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	92
PID 3720 wrote to memory of 4456	3720	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	92
PID 3720 wrote to memory of 4456	3720	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	92
PID 3720 wrote to memory of 4456	3720	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	92
PID 3720 wrote to memory of 4456	3720	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	92
PID 3720 wrote to memory of 4456	3720	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	92
PID 3720 wrote to memory of 4456	3720	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	92
PID 3720 wrote to memory of 4456	3720	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	92
PID 3720 wrote to memory of 4456	3720	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	92
PID 3720 wrote to memory of 4456	3720	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	92
PID 4456 wrote to memory of 4108	4456	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	95
PID 4456 wrote to memory of 4108	4456	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	95
PID 4456 wrote to memory of 4108	4456	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	95
PID 4456 wrote to memory of 3420	4456	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	97
PID 4456 wrote to memory of 3420	4456	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	97
PID 4456 wrote to memory of 3420	4456	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	97
PID 3420 wrote to memory of 3248	3420	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	104
PID 3420 wrote to memory of 3248	3420	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	104
PID 3420 wrote to memory of 3248	3420	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	104
PID 3420 wrote to memory of 3248	3420	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	104
PID 3420 wrote to memory of 3248	3420	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	104
PID 3420 wrote to memory of 3248	3420	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	104
PID 3420 wrote to memory of 3248	3420	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	104
PID 3420 wrote to memory of 3248	3420	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	104
PID 3420 wrote to memory of 3248	3420	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	104
PID 3420 wrote to memory of 3248	3420	6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe	104

C:\Users\Admin\AppData\Local\Temp\6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe
"C:\Users\Admin\AppData\Local\Temp\6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3720
- C:\Users\Admin\AppData\Local\Temp\6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe
  "C:\Users\Admin\AppData\Local\Temp\6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4456
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\90e734e1-79b5-4694-acef-d0e3e4111b1e" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4108
- - C:\Users\Admin\AppData\Local\Temp\6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe
    "C:\Users\Admin\AppData\Local\Temp\6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3420
  - - C:\Users\Admin\AppData\Local\Temp\6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe
      "C:\Users\Admin\AppData\Local\Temp\6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:3248
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3248 -s 568
        5⤵
        Program crash
        
        PID:3628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3248 -ip 3248
1⤵
PID:2744

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\Local\90e734e1-79b5-4694-acef-d0e3e4111b1e\6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744.exe

Filesize
723KB

MD5
8846a2226f2a09cc1aa53dc160896323

SHA1
f4dcf8c8b14454d212e4618c1c34a57e2f86e88a

SHA256
6bb499b088e28cf3b3503baf9d888ed58e3077a5278fcd18301274d591617744

SHA512
f0d15232a9662986f9966a245ebe25746b02568587c00136911d8d7aab9d6819d498f154316e9bc9a08bb7a2c69d87a652d2a8c1f8dc30c46a88cb9a90de0981

Download Submit
memory/3248-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3248-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3248-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3420-17-0x00000000020D0000-0x0000000002162000-memory.dmp

Filesize
584KB

Download
memory/3720-4-0x0000000002100000-0x0000000002192000-memory.dmp

Filesize
584KB

Download
memory/3720-0-0x0000000002100000-0x0000000002192000-memory.dmp

Filesize
584KB

Download
memory/3720-1-0x00000000022E0000-0x00000000023FB000-memory.dmp

Filesize
1.1MB

Download
memory/4456-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4456-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4456-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4456-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4456-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads