djvu | 56529b359e4c4695a3e290752d61c59ad3327a16574da95ca69a214552241a63

General

Target

file.exe
Size

749KB
MD5

87ba288f14fbf826d4cf061d9f8e72ed
SHA1

ec1f877e40b5e8917953e54eb51834a15335aa6e
SHA256

56529b359e4c4695a3e290752d61c59ad3327a16574da95ca69a214552241a63
SHA512

200457f3c9f1120c6c97df354d7e9898e0a3dfecb6fb771985f9e28adaab29841e03e37e1100b759ae7baf89072859082aa3ddc340a8501396426441f8391f95
SSDEEP

12288:lL++FQkxaH3tr2VBEMuw6mQVSql6SoP0bSJg5J8m5ubKrD4Akb5i2yj5+:U+FQkxI2E5oPI0Kp5ubKX4S+

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.cdxx
offline_id
LBxKKiegnAy53rpqH3Pj2j46vwldiEt9kqHSuMt1
payload_url
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-iVcrVFVRqu Price of private key and decrypt software is $1999. Discount 50% available if you contact us first 72 hours, that's price for you is $999. 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: 0847ASdw

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

resource	yara_rule
behavioral2/memory/1644-0-0x0000000004920000-0x0000000004A3B000-memory.dmp	family_djvu
behavioral2/memory/1740-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1740-1-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1740-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1740-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1740-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3108-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3108-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3108-18-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3108-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3108-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3108-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3108-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3108-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3108-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3108-36-0x0000000000400000-0x0000000000537000-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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	file.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3288	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-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\d643e79c-a38a-4b28-80cf-59aa726c59b0\\file.exe\" --AutoStart"	file.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
3	api.2ip.ua
5	api.2ip.ua
12	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1644 set thread context of 1740	1644	file.exe	33
PID 4300 set thread context of 3108	4300	file.exe	81

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
1740	file.exe
1740	file.exe
3108	file.exe
3108	file.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1644 wrote to memory of 1740	1644	file.exe	33
PID 1644 wrote to memory of 1740	1644	file.exe	33
PID 1644 wrote to memory of 1740	1644	file.exe	33
PID 1644 wrote to memory of 1740	1644	file.exe	33
PID 1644 wrote to memory of 1740	1644	file.exe	33
PID 1644 wrote to memory of 1740	1644	file.exe	33
PID 1644 wrote to memory of 1740	1644	file.exe	33
PID 1644 wrote to memory of 1740	1644	file.exe	33
PID 1644 wrote to memory of 1740	1644	file.exe	33
PID 1644 wrote to memory of 1740	1644	file.exe	33
PID 1740 wrote to memory of 3288	1740	file.exe	74
PID 1740 wrote to memory of 3288	1740	file.exe	74
PID 1740 wrote to memory of 3288	1740	file.exe	74
PID 1740 wrote to memory of 4300	1740	file.exe	83
PID 1740 wrote to memory of 4300	1740	file.exe	83
PID 1740 wrote to memory of 4300	1740	file.exe	83
PID 4300 wrote to memory of 3108	4300	file.exe	81
PID 4300 wrote to memory of 3108	4300	file.exe	81
PID 4300 wrote to memory of 3108	4300	file.exe	81
PID 4300 wrote to memory of 3108	4300	file.exe	81
PID 4300 wrote to memory of 3108	4300	file.exe	81
PID 4300 wrote to memory of 3108	4300	file.exe	81
PID 4300 wrote to memory of 3108	4300	file.exe	81
PID 4300 wrote to memory of 3108	4300	file.exe	81
PID 4300 wrote to memory of 3108	4300	file.exe	81
PID 4300 wrote to memory of 3108	4300	file.exe	81

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1644
- C:\Users\Admin\AppData\Local\Temp\file.exe
  "C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1740
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\d643e79c-a38a-4b28-80cf-59aa726c59b0" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3288
- - C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4300

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
1⤵
- Suspicious behavior: EnumeratesProcesses
PID:3108

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
73ce21ff1fb2989f6350ace9274ae9b5

SHA1
7db6c387eb8351f3e8e361d10224711c3477821e

SHA256
d7005273bab949c42fcc73eac7820c4c5f08df1e9095020cdb0e17fc9e282d50

SHA512
a43767a55a559a8bf51d5dcb9bc378167f63e15f571b6be35903048570d036fed2a3f6a37c91f469ee9808d245cdd875b9dad38556e6bf97258a82c7071aeab3

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
62dcf8d8fcadb3d3a3888f53eff5693d

SHA1
a271ab827c9e20d75bfea2f400ff14b960eb6c76

SHA256
632a1d35dd2a569777cd2dd65a9739818c78752de3a3ae16d7199b7d2aa35f0f

SHA512
3d32559f985ee248762e2021be9d86242a36083fec9ffa32cb44f41f96ad53c972168e557fb826a54296afc1336db67af54541096f5cbd735a4de43171052043

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

Filesize
392B

MD5
129394d9248350b9bef56b276fe61ad9

SHA1
980e0f6e2ffae584829c451fae14549d07a5e088

SHA256
a5b59ab557ae0c017e381577800cfd2757dbfd65507c5ebece0c9a4f7ccafc46

SHA512
44c6e6f9b3073886bc232a180bc26bc69ffe37382b4629bd8a3ea9dbea1e11d277a33ed26a444fe1730e56232eeb0c4cd0cace04ab8f1f915fd3b584b7e29895

Download Submit
C:\Users\Admin\AppData\Local\d643e79c-a38a-4b28-80cf-59aa726c59b0\file.exe

Filesize
749KB

MD5
87ba288f14fbf826d4cf061d9f8e72ed

SHA1
ec1f877e40b5e8917953e54eb51834a15335aa6e

SHA256
56529b359e4c4695a3e290752d61c59ad3327a16574da95ca69a214552241a63

SHA512
200457f3c9f1120c6c97df354d7e9898e0a3dfecb6fb771985f9e28adaab29841e03e37e1100b759ae7baf89072859082aa3ddc340a8501396426441f8391f95

Download Submit
memory/1644-0-0x0000000004920000-0x0000000004A3B000-memory.dmp

Filesize
1.1MB

Download
memory/1740-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1740-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1740-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1740-1-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1740-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3108-18-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3108-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3108-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3108-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3108-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3108-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3108-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3108-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3108-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3108-36-0x0000000000400000-0x0000000000537000-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