djvu | 82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f

General

Target

82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe
Size

803KB
MD5

0667a74a0e7cf1f09f66caf3f8712152
SHA1

d4ec2cd9745ab657d4251728b3659792cb723f9e
SHA256

82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f
SHA512

157e19ceca7e5a850fbe40823c38e2388c2ca28771929ec8c7c78bbf667cbf144717e2be427669d264f14da32527728317d2d18cf992ea712fb2f911760e008a
SSDEEP

12288:e4tvDr5yrrV3RShu2O4JI+h8i90cXG2f26QgUNtC95+qyO1yzpYrgfhIAcQxSsF:tQ/PUIY/RPfSLO9cqjFrgzc6Ss

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.uajs
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/412-2-0x0000000002280000-0x000000000239B000-memory.dmp	family_djvu
behavioral1/memory/4428-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4428-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4428-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4428-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4428-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4200-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4200-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4200-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4200-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4200-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4200-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4200-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4200-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4200-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4200-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4200-39-0x0000000000400000-0x0000000000537000-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4024	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-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f300d66b-0d08-493e-a420-212220b2cece\\82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe\" --AutoStart"	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.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
5	api.2ip.ua
6	api.2ip.ua
19	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 412 set thread context of 4428	412	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	86
PID 2288 set thread context of 4200	2288	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	94

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
4428	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe
4428	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe
4200	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe
4200	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 412 wrote to memory of 4428	412	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	86
PID 412 wrote to memory of 4428	412	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	86
PID 412 wrote to memory of 4428	412	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	86
PID 412 wrote to memory of 4428	412	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	86
PID 412 wrote to memory of 4428	412	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	86
PID 412 wrote to memory of 4428	412	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	86
PID 412 wrote to memory of 4428	412	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	86
PID 412 wrote to memory of 4428	412	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	86
PID 412 wrote to memory of 4428	412	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	86
PID 412 wrote to memory of 4428	412	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	86
PID 4428 wrote to memory of 4024	4428	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	90
PID 4428 wrote to memory of 4024	4428	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	90
PID 4428 wrote to memory of 4024	4428	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	90
PID 4428 wrote to memory of 2288	4428	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	92
PID 4428 wrote to memory of 2288	4428	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	92
PID 4428 wrote to memory of 2288	4428	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	92
PID 2288 wrote to memory of 4200	2288	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	94
PID 2288 wrote to memory of 4200	2288	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	94
PID 2288 wrote to memory of 4200	2288	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	94
PID 2288 wrote to memory of 4200	2288	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	94
PID 2288 wrote to memory of 4200	2288	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	94
PID 2288 wrote to memory of 4200	2288	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	94
PID 2288 wrote to memory of 4200	2288	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	94
PID 2288 wrote to memory of 4200	2288	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	94
PID 2288 wrote to memory of 4200	2288	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	94
PID 2288 wrote to memory of 4200	2288	82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe	94

C:\Users\Admin\AppData\Local\Temp\82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe
"C:\Users\Admin\AppData\Local\Temp\82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:412
- C:\Users\Admin\AppData\Local\Temp\82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe
  "C:\Users\Admin\AppData\Local\Temp\82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4428
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\f300d66b-0d08-493e-a420-212220b2cece" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4024
- - C:\Users\Admin\AppData\Local\Temp\82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe
    "C:\Users\Admin\AppData\Local\Temp\82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2288
  - - C:\Users\Admin\AppData\Local\Temp\82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe
      "C:\Users\Admin\AppData\Local\Temp\82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4200

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
6ac965544f94d717ec77d22ba319e1da

SHA1
270fccfb81602a1e4dda0dae46036c1ef4758b6f

SHA256
3f62323be453b98cee0aad07154ee02fc852e16bac4dc520073dd0dd498393fe

SHA512
10a602d3e632903f8662a337271a5911d9f26a6178b8de1048803997810a41e079f81a9e5c02b2e9855269827570620b80bec27d18b82b43d9c9842c540da82e

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

Filesize
392B

MD5
af7fa295f3265bef7903fd543db23791

SHA1
f2847b49a94ea8cf92b30ddb3a992df2ef4856a7

SHA256
d5d8fa60423093108b77fa125429bcdcc7ebfa4e9d5f4af937269cc90a9b50a8

SHA512
8a8fd211e5f14ca51567a2bc5d65ed97093fcf79f0eeb9457b2509ae84abf27d75c910e07c7fd03f1f7c719eef501324fc2aa0b06bacfc738fe0f2f3a7ce7832

Download Submit
C:\Users\Admin\AppData\Local\f300d66b-0d08-493e-a420-212220b2cece\82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f.exe

Filesize
803KB

MD5
0667a74a0e7cf1f09f66caf3f8712152

SHA1
d4ec2cd9745ab657d4251728b3659792cb723f9e

SHA256
82ae1baea3deb640268e3dc7a25f9428e0bc036217b4e81ef88325df45ff993f

SHA512
157e19ceca7e5a850fbe40823c38e2388c2ca28771929ec8c7c78bbf667cbf144717e2be427669d264f14da32527728317d2d18cf992ea712fb2f911760e008a

Download Submit
memory/412-1-0x0000000000700000-0x00000000007A0000-memory.dmp

Filesize
640KB

Download
memory/412-2-0x0000000002280000-0x000000000239B000-memory.dmp

Filesize
1.1MB

Download
memory/2288-21-0x0000000000760000-0x00000000007F7000-memory.dmp

Filesize
604KB

Download
memory/4200-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4200-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4200-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4200-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4200-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4200-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4200-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4200-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4200-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4200-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4200-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4428-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4428-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4428-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4428-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4428-4-0x0000000000400000-0x0000000000537000-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