djvu | a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04

General

Target

a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe
Size

764KB
MD5

aa0576e05269ce873a009e6da9312446
SHA1

2309e27044d26edbd1725ad21bfd7e03cedb50e5
SHA256

a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04
SHA512

21bad0a55710e9095871f7f2a3de1e44f5601f3fc2323c465447962b87a962c5fe3d247e53e94ecc1c8036bc590112bb708b8074440fcb29a878a1be8cfcf17d
SSDEEP

12288:YpT/P9WB9upOWe26OT4ctnUOiii9ICIyt7ZSuq4Y0:cTkapOAPpWZWP0

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.jzie
offline_id
4FMaMDK6uqPZOxJj64677pqiSGF54A1Dam9zfUt1
payload_url
ransomnote
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rsa_pubkey.plain

Signatures

Detected Djvu ransomware 11 IoCs

resource	yara_rule
behavioral1/memory/3252-2-0x0000000002650000-0x000000000276B000-memory.dmp	family_djvu
behavioral1/memory/1804-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1804-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1804-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1804-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1804-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1804-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1804-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1632-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1632-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1632-36-0x0000000000400000-0x0000000000537000-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-1-5-21-3125601242-331447593-1512828465-1000\Control Panel\International\Geo\Nation	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4328	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-1-5-21-3125601242-331447593-1512828465-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\d2112e2e-ee2c-4c97-a91a-84d5c3ab1041\\a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe\" --AutoStart"	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.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
64	api.2ip.ua
65	api.2ip.ua
77	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3252 set thread context of 1804	3252	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	93
PID 4868 set thread context of 1632	4868	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	111

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1804	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe
1804	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3252 wrote to memory of 1804	3252	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	93
PID 3252 wrote to memory of 1804	3252	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	93
PID 3252 wrote to memory of 1804	3252	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	93
PID 3252 wrote to memory of 1804	3252	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	93
PID 3252 wrote to memory of 1804	3252	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	93
PID 3252 wrote to memory of 1804	3252	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	93
PID 3252 wrote to memory of 1804	3252	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	93
PID 3252 wrote to memory of 1804	3252	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	93
PID 3252 wrote to memory of 1804	3252	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	93
PID 3252 wrote to memory of 1804	3252	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	93
PID 1804 wrote to memory of 4328	1804	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	105
PID 1804 wrote to memory of 4328	1804	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	105
PID 1804 wrote to memory of 4328	1804	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	105
PID 1804 wrote to memory of 4868	1804	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	109
PID 1804 wrote to memory of 4868	1804	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	109
PID 1804 wrote to memory of 4868	1804	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	109
PID 4868 wrote to memory of 1632	4868	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	111
PID 4868 wrote to memory of 1632	4868	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	111
PID 4868 wrote to memory of 1632	4868	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	111
PID 4868 wrote to memory of 1632	4868	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	111
PID 4868 wrote to memory of 1632	4868	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	111
PID 4868 wrote to memory of 1632	4868	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	111
PID 4868 wrote to memory of 1632	4868	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	111
PID 4868 wrote to memory of 1632	4868	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	111
PID 4868 wrote to memory of 1632	4868	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	111
PID 4868 wrote to memory of 1632	4868	a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe	111

C:\Users\Admin\AppData\Local\Temp\a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe
"C:\Users\Admin\AppData\Local\Temp\a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3252
- C:\Users\Admin\AppData\Local\Temp\a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe
  "C:\Users\Admin\AppData\Local\Temp\a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1804
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\d2112e2e-ee2c-4c97-a91a-84d5c3ab1041" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4328
- - C:\Users\Admin\AppData\Local\Temp\a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe
    "C:\Users\Admin\AppData\Local\Temp\a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4868
  - - C:\Users\Admin\AppData\Local\Temp\a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe
      "C:\Users\Admin\AppData\Local\Temp\a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:1632

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 384 -p 1632 -ip 1632
1⤵
PID:3840

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\d2112e2e-ee2c-4c97-a91a-84d5c3ab1041\a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04.exe

Filesize
764KB

MD5
aa0576e05269ce873a009e6da9312446

SHA1
2309e27044d26edbd1725ad21bfd7e03cedb50e5

SHA256
a2e6722d621027d26100ab1db01dccf01d2734e66a3daa58ff73e37082728b04

SHA512
21bad0a55710e9095871f7f2a3de1e44f5601f3fc2323c465447962b87a962c5fe3d247e53e94ecc1c8036bc590112bb708b8074440fcb29a878a1be8cfcf17d

Download Submit
memory/1632-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1632-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1632-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1804-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1804-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1804-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1804-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1804-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1804-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1804-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3252-1-0x0000000000920000-0x00000000009C0000-memory.dmp

Filesize
640KB

Download
memory/3252-2-0x0000000002650000-0x000000000276B000-memory.dmp

Filesize
1.1MB

Download
memory/4868-31-0x0000000000AB0000-0x0000000000B50000-memory.dmp

Filesize
640KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads