djvu | 7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6

General

Target

7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe
Size

777KB
MD5

b323502c619419ca14cbed13095d9306
SHA1

2d875a60aa893f33da5490d0e61f5c4047939ae0
SHA256

7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6
SHA512

db691484fd1afffd69181dcd638ecbd3a0fb0ac9b8b56daa691fec3bc155054493183bc8ba215fae72d34e344ba143548115ad7f26593d90eef33005cd65eb6c
SSDEEP

12288:44DuSXSk4sY2/fgbr2Eu5i/Dt8wGG5beAD4IzQQ9j0UJrHPp/Uc2SYhSOE:44HXSN3Xu5+8JuKADPzQQjBp/UnS5OE

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/test1/get.php

Attributes

extension
.itqw
offline_id
9FgVtzPuDnE9NZWeLG9q9D2SjzVyIqJJ4jFNKXt1
payload_url
http://colisumy.com/dl/build2.exe

http://zexeq.com/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-cGZhpvUKxk 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: 0809JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 10 IoCs

resource	yara_rule
behavioral1/memory/3912-2-0x0000000002720000-0x000000000283B000-memory.dmp	family_djvu
behavioral1/memory/2264-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2264-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2264-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2264-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2264-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1696-18-0x00000000023B0000-0x0000000002450000-memory.dmp	family_djvu
behavioral1/memory/572-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/572-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/572-23-0x0000000000400000-0x0000000000537000-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	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4588	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\\454a3f6d-68a2-48de-a521-7b4fd71c495c\\7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe\" --AutoStart"	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.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
16	api.2ip.ua
17	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3912 set thread context of 2264	3912	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	84
PID 1696 set thread context of 572	1696	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	89

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
4236	572	WerFault.exe	89

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2264	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe
2264	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3912 wrote to memory of 2264	3912	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	84
PID 3912 wrote to memory of 2264	3912	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	84
PID 3912 wrote to memory of 2264	3912	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	84
PID 3912 wrote to memory of 2264	3912	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	84
PID 3912 wrote to memory of 2264	3912	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	84
PID 3912 wrote to memory of 2264	3912	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	84
PID 3912 wrote to memory of 2264	3912	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	84
PID 3912 wrote to memory of 2264	3912	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	84
PID 3912 wrote to memory of 2264	3912	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	84
PID 3912 wrote to memory of 2264	3912	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	84
PID 2264 wrote to memory of 4588	2264	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	86
PID 2264 wrote to memory of 4588	2264	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	86
PID 2264 wrote to memory of 4588	2264	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	86
PID 2264 wrote to memory of 1696	2264	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	87
PID 2264 wrote to memory of 1696	2264	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	87
PID 2264 wrote to memory of 1696	2264	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	87
PID 1696 wrote to memory of 572	1696	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	89
PID 1696 wrote to memory of 572	1696	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	89
PID 1696 wrote to memory of 572	1696	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	89
PID 1696 wrote to memory of 572	1696	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	89
PID 1696 wrote to memory of 572	1696	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	89
PID 1696 wrote to memory of 572	1696	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	89
PID 1696 wrote to memory of 572	1696	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	89
PID 1696 wrote to memory of 572	1696	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	89
PID 1696 wrote to memory of 572	1696	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	89
PID 1696 wrote to memory of 572	1696	7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe	89

C:\Users\Admin\AppData\Local\Temp\7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe
"C:\Users\Admin\AppData\Local\Temp\7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3912
- C:\Users\Admin\AppData\Local\Temp\7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe
  "C:\Users\Admin\AppData\Local\Temp\7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2264
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\454a3f6d-68a2-48de-a521-7b4fd71c495c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4588
- - C:\Users\Admin\AppData\Local\Temp\7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe
    "C:\Users\Admin\AppData\Local\Temp\7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1696
  - - C:\Users\Admin\AppData\Local\Temp\7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe
      "C:\Users\Admin\AppData\Local\Temp\7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:572
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 572 -s 568
        5⤵
        Program crash
        
        PID:4236

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 572 -ip 572
1⤵
PID:456

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\454a3f6d-68a2-48de-a521-7b4fd71c495c\7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6.exe

Filesize
777KB

MD5
b323502c619419ca14cbed13095d9306

SHA1
2d875a60aa893f33da5490d0e61f5c4047939ae0

SHA256
7ad237041bfbf0ffabb0a0b8893c09c314b5c21696a275b2b64ba276b66e31e6

SHA512
db691484fd1afffd69181dcd638ecbd3a0fb0ac9b8b56daa691fec3bc155054493183bc8ba215fae72d34e344ba143548115ad7f26593d90eef33005cd65eb6c

Download Submit
memory/572-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/572-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/572-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1696-18-0x00000000023B0000-0x0000000002450000-memory.dmp

Filesize
640KB

Download
memory/2264-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2264-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2264-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2264-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2264-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3912-1-0x00000000025D0000-0x0000000002663000-memory.dmp

Filesize
588KB

Download
memory/3912-2-0x0000000002720000-0x000000000283B000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads