djvu | 99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac

General

Target

99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe
Size

712KB
MD5

5c01df397d0733f2be4d5a7c55429db7
SHA1

9fcdc973fe2ed02d2952c54787683724ed66a24e
SHA256

99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac
SHA512

aa3803b130694097487a0a5e73e9d2151f1e25bdc2960009a1d18cf98c1c68c37d26f232253c1bd24448fa0a7450b1fe2c5156b9d4b2fcca0f2e0eacce80cdaa
SSDEEP

12288:v3zaB9AoomYixKkSY0k0XgvYjxTJcCavWAH:2AoomxS1IYFTJ5auA

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.bgzq
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://cajgtus.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. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. 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: 0864PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 14 IoCs

resource	yara_rule
behavioral1/memory/1724-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1724-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1724-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1724-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2096-2-0x0000000004930000-0x0000000004A4B000-memory.dmp	family_djvu
behavioral1/memory/828-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/828-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/828-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/828-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/828-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/828-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/828-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/828-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/828-34-0x0000000000400000-0x0000000000537000-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-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2044	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-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c33682df-db61-4f7d-814a-742e33c9ecb6\\99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe\" --AutoStart"	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.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
14	api.2ip.ua
15	api.2ip.ua
20	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2096 set thread context of 1724	2096	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	87
PID 4984 set thread context of 828	4984	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	91

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
1724	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe
1724	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe
828	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe
828	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2096 wrote to memory of 1724	2096	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	87
PID 2096 wrote to memory of 1724	2096	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	87
PID 2096 wrote to memory of 1724	2096	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	87
PID 2096 wrote to memory of 1724	2096	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	87
PID 2096 wrote to memory of 1724	2096	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	87
PID 2096 wrote to memory of 1724	2096	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	87
PID 2096 wrote to memory of 1724	2096	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	87
PID 2096 wrote to memory of 1724	2096	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	87
PID 2096 wrote to memory of 1724	2096	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	87
PID 2096 wrote to memory of 1724	2096	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	87
PID 1724 wrote to memory of 2044	1724	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	88
PID 1724 wrote to memory of 2044	1724	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	88
PID 1724 wrote to memory of 2044	1724	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	88
PID 1724 wrote to memory of 4984	1724	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	89
PID 1724 wrote to memory of 4984	1724	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	89
PID 1724 wrote to memory of 4984	1724	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	89
PID 4984 wrote to memory of 828	4984	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	91
PID 4984 wrote to memory of 828	4984	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	91
PID 4984 wrote to memory of 828	4984	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	91
PID 4984 wrote to memory of 828	4984	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	91
PID 4984 wrote to memory of 828	4984	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	91
PID 4984 wrote to memory of 828	4984	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	91
PID 4984 wrote to memory of 828	4984	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	91
PID 4984 wrote to memory of 828	4984	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	91
PID 4984 wrote to memory of 828	4984	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	91
PID 4984 wrote to memory of 828	4984	99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe	91

C:\Users\Admin\AppData\Local\Temp\99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe
"C:\Users\Admin\AppData\Local\Temp\99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2096
- C:\Users\Admin\AppData\Local\Temp\99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe
  "C:\Users\Admin\AppData\Local\Temp\99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1724
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\c33682df-db61-4f7d-814a-742e33c9ecb6" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2044
- - C:\Users\Admin\AppData\Local\Temp\99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe
    "C:\Users\Admin\AppData\Local\Temp\99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4984
  - - C:\Users\Admin\AppData\Local\Temp\99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe
      "C:\Users\Admin\AppData\Local\Temp\99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:828

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
6007ca6192acc48214149185effd485e

SHA1
9e1bd79f873aa5bd113e6d1f3fd30078478f3239

SHA256
19d440e3d197437fa64e98ffd71ab3eae51f107c438b25fe712bbc92491d5af7

SHA512
ce79184486b1b9da0b1ed9564b89a3641fbd593ea34f303f6fd50e9b3b6f66ccebb824f71ea229af04248fd64f4bc48b65cff61af5beaf8533f6c3475aa235a8

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
c6d886566c5fed851991e2909543bb08

SHA1
15f1dff5b1e1f13db1ac67a41a9fa75a80d67000

SHA256
88c995f81af42e20b9a090585c61c390ad6a15b132b4d67280304c2edbab29de

SHA512
a93cb8b127c8acf3ec4f5ecbaa731062dbf14268ca35af4500b21dc2cb19c566ad207ab9813718b5ab327509e47f31c34dc84d00f3008b6ec52faa99b6e697ae

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

Filesize
392B

MD5
24761e26655d51ed657f086ccbae8aee

SHA1
6a2d764702b78f72ef7924edc6767f9a878bbaab

SHA256
cb2409fc6289877cd5088d84310a450a517defe9bd62ffbbdac49ad8509b057c

SHA512
3a03b908c528e87840d1bae99830ecf3338ef478504cdb642c2cf37d06d0e8d05a583e3f922c18c628c4a55687dd95583980a226c68763d3614903c87dc01ed6

Download Submit
C:\Users\Admin\AppData\Local\c33682df-db61-4f7d-814a-742e33c9ecb6\99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac.exe

Filesize
712KB

MD5
5c01df397d0733f2be4d5a7c55429db7

SHA1
9fcdc973fe2ed02d2952c54787683724ed66a24e

SHA256
99aabd4ea7ba74c3e24b12388207c29d5bf352c7c0150b6f5dabf2166a1facac

SHA512
aa3803b130694097487a0a5e73e9d2151f1e25bdc2960009a1d18cf98c1c68c37d26f232253c1bd24448fa0a7450b1fe2c5156b9d4b2fcca0f2e0eacce80cdaa

Download Submit
memory/828-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/828-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/828-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/828-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/828-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/828-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/828-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/828-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/828-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1724-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1724-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1724-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1724-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1724-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2096-1-0x0000000002FC0000-0x000000000305A000-memory.dmp

Filesize
616KB

Download
memory/2096-2-0x0000000004930000-0x0000000004A4B000-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