djvu | ae415d8bdba3d321d8d70f4fbd1bf33f8414f8727129761a4820472f2ab2edb8

General

Target

8ce7725324a4b6fcfa881464ae60e573.exe
Size

786KB
MD5

8ce7725324a4b6fcfa881464ae60e573
SHA1

6c562ab98afcde7a9d41993c1c1bdefb45e400e8
SHA256

ae415d8bdba3d321d8d70f4fbd1bf33f8414f8727129761a4820472f2ab2edb8
SHA512

fb12232cc93598f8d321ff21bd30fc1494e127544c0f0fa6a5de075fba56bb7d06574fafafa0b1abe4f99be508e454248f0b0f97ef56cbd9fb8db7009f8769a8
SSDEEP

12288:WYmgocH1S2zL+Za0aXzPkvhJt99WawKKeW0AouQfX287epPtq692UmbExttreBPb:WYtnzqZa0Ck9WeBDmYep1CbExOBPA

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://astdg.top/nddddhsspen6/get.php

Attributes

extension
.moqs
offline_id
CatwRkqdYh2Jomn6DqwFoGgcSbDsle1xlE1NPtt1
payload_url
http://securebiz.org/dl/build2.exe
ransomnote
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rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral2/memory/4460-2-0x0000000002840000-0x000000000295B000-memory.dmp	family_djvu
behavioral2/memory/4060-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4060-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4060-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4060-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4060-16-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4076-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4076-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4076-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4076-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4076-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4076-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4076-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4076-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4076-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4076-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4076-37-0x0000000000400000-0x0000000000537000-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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	8ce7725324a4b6fcfa881464ae60e573.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1544	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-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\1103a18a-1816-441f-a84f-05ed7f560328\\8ce7725324a4b6fcfa881464ae60e573.exe\" --AutoStart"	8ce7725324a4b6fcfa881464ae60e573.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
18	api.2ip.ua
19	api.2ip.ua
24	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4460 set thread context of 4060	4460	8ce7725324a4b6fcfa881464ae60e573.exe	84
PID 3632 set thread context of 4076	3632	8ce7725324a4b6fcfa881464ae60e573.exe	92

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
4060	8ce7725324a4b6fcfa881464ae60e573.exe
4060	8ce7725324a4b6fcfa881464ae60e573.exe
4076	8ce7725324a4b6fcfa881464ae60e573.exe
4076	8ce7725324a4b6fcfa881464ae60e573.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4460 wrote to memory of 4060	4460	8ce7725324a4b6fcfa881464ae60e573.exe	84
PID 4460 wrote to memory of 4060	4460	8ce7725324a4b6fcfa881464ae60e573.exe	84
PID 4460 wrote to memory of 4060	4460	8ce7725324a4b6fcfa881464ae60e573.exe	84
PID 4460 wrote to memory of 4060	4460	8ce7725324a4b6fcfa881464ae60e573.exe	84
PID 4460 wrote to memory of 4060	4460	8ce7725324a4b6fcfa881464ae60e573.exe	84
PID 4460 wrote to memory of 4060	4460	8ce7725324a4b6fcfa881464ae60e573.exe	84
PID 4460 wrote to memory of 4060	4460	8ce7725324a4b6fcfa881464ae60e573.exe	84
PID 4460 wrote to memory of 4060	4460	8ce7725324a4b6fcfa881464ae60e573.exe	84
PID 4460 wrote to memory of 4060	4460	8ce7725324a4b6fcfa881464ae60e573.exe	84
PID 4460 wrote to memory of 4060	4460	8ce7725324a4b6fcfa881464ae60e573.exe	84
PID 4060 wrote to memory of 1544	4060	8ce7725324a4b6fcfa881464ae60e573.exe	87
PID 4060 wrote to memory of 1544	4060	8ce7725324a4b6fcfa881464ae60e573.exe	87
PID 4060 wrote to memory of 1544	4060	8ce7725324a4b6fcfa881464ae60e573.exe	87
PID 4060 wrote to memory of 3632	4060	8ce7725324a4b6fcfa881464ae60e573.exe	89
PID 4060 wrote to memory of 3632	4060	8ce7725324a4b6fcfa881464ae60e573.exe	89
PID 4060 wrote to memory of 3632	4060	8ce7725324a4b6fcfa881464ae60e573.exe	89
PID 3632 wrote to memory of 4076	3632	8ce7725324a4b6fcfa881464ae60e573.exe	92
PID 3632 wrote to memory of 4076	3632	8ce7725324a4b6fcfa881464ae60e573.exe	92
PID 3632 wrote to memory of 4076	3632	8ce7725324a4b6fcfa881464ae60e573.exe	92
PID 3632 wrote to memory of 4076	3632	8ce7725324a4b6fcfa881464ae60e573.exe	92
PID 3632 wrote to memory of 4076	3632	8ce7725324a4b6fcfa881464ae60e573.exe	92
PID 3632 wrote to memory of 4076	3632	8ce7725324a4b6fcfa881464ae60e573.exe	92
PID 3632 wrote to memory of 4076	3632	8ce7725324a4b6fcfa881464ae60e573.exe	92
PID 3632 wrote to memory of 4076	3632	8ce7725324a4b6fcfa881464ae60e573.exe	92
PID 3632 wrote to memory of 4076	3632	8ce7725324a4b6fcfa881464ae60e573.exe	92
PID 3632 wrote to memory of 4076	3632	8ce7725324a4b6fcfa881464ae60e573.exe	92

C:\Users\Admin\AppData\Local\Temp\8ce7725324a4b6fcfa881464ae60e573.exe
"C:\Users\Admin\AppData\Local\Temp\8ce7725324a4b6fcfa881464ae60e573.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4460
- C:\Users\Admin\AppData\Local\Temp\8ce7725324a4b6fcfa881464ae60e573.exe
  "C:\Users\Admin\AppData\Local\Temp\8ce7725324a4b6fcfa881464ae60e573.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4060
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\1103a18a-1816-441f-a84f-05ed7f560328" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1544
- - C:\Users\Admin\AppData\Local\Temp\8ce7725324a4b6fcfa881464ae60e573.exe
    "C:\Users\Admin\AppData\Local\Temp\8ce7725324a4b6fcfa881464ae60e573.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3632
  - - C:\Users\Admin\AppData\Local\Temp\8ce7725324a4b6fcfa881464ae60e573.exe
      "C:\Users\Admin\AppData\Local\Temp\8ce7725324a4b6fcfa881464ae60e573.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4076

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
1KB

MD5
a1b93d65299e4a4290d9819094c12b7f

SHA1
72994579854c3d8795fbd5525730d8726d82d1bd

SHA256
4f89d640a400d3d8fdbaa5998a4a3d74408902a695da46e247e9ea1e68cb92a3

SHA512
a723e161b8766b89fe10b812ee449fe565557b04072a1a81ccbb3e86dbd9658daea7c9e9fc58eb3ae859f89f3f62e8727004c4e048a742f44ac5de072a4a134e

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
33dde81c0bb61650921545a1d04a679a

SHA1
08dd08794902492fb696a34a52ec0f407ab6f97e

SHA256
e0e535e4d5a5d8754ee0b542cd719a18f5db45a0ba0266537c6510a3c98f87ed

SHA512
62d5d9bdbb68960307181690b9c85fe521b3865bd39e31221be5169525eec798c733bb9036616df2d64db9e3c33e1f22bd8f9c86b594bb490a029591f3663e20

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

Filesize
392B

MD5
9bcc034b3e1c1dad22498fd02dfbfa34

SHA1
777309c37c95d9a704d9f82f218ca60def63e72d

SHA256
3dabcca6aa465e290ad719cd5805a8057d09f4645a16f812bf7bc7d4b5576ddf

SHA512
5b8374b82def2320a28c6593c610f199444d72db337a3d6c35ebe50ddca43d2b2dbf2b2c17802059108105944966a482401fa00b127adef0d1effb51845ff974

Download Submit
C:\Users\Admin\AppData\Local\1103a18a-1816-441f-a84f-05ed7f560328\8ce7725324a4b6fcfa881464ae60e573.exe

Filesize
786KB

MD5
8ce7725324a4b6fcfa881464ae60e573

SHA1
6c562ab98afcde7a9d41993c1c1bdefb45e400e8

SHA256
ae415d8bdba3d321d8d70f4fbd1bf33f8414f8727129761a4820472f2ab2edb8

SHA512
fb12232cc93598f8d321ff21bd30fc1494e127544c0f0fa6a5de075fba56bb7d06574fafafa0b1abe4f99be508e454248f0b0f97ef56cbd9fb8db7009f8769a8

Download Submit
memory/3632-19-0x00000000025A0000-0x000000000263C000-memory.dmp

Filesize
624KB

Download
memory/4060-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4060-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4060-16-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4060-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4060-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4076-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4076-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4076-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4076-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4076-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4076-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4076-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4076-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4076-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4076-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4076-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4460-1-0x0000000002670000-0x000000000270D000-memory.dmp

Filesize
628KB

Download
memory/4460-2-0x0000000002840000-0x000000000295B000-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