djvu | 1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089

General

Target

1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe
Size

739KB
MD5

9c386f0553f080254ae892482aaa46f6
SHA1

670c07b629d4c4b4afaa0e45a3d5676c3f68aaff
SHA256

1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089
SHA512

e6ff14a3c37093c4fdd8db5af88481caba338372f0ba7ba641777cc75c5203f11c5093a9e11b405a1d3705acaeededdcb8b17e79972facea0beca9d6a091742c
SSDEEP

12288:NGGrgI+Ss+6DeBTd4NT5/6MesF786s9O/BWfCnBngASkQh7srb3gVyJ3:NGD5KTcT5/SsFLeyFHLkQrb3gVyJ3

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.qual
offline_id
KLbRmn6on3AXGFgDLGtd0IkHmV7uHw9VxlcxO5t1
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. 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. 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: 0876qual

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

resource	yara_rule
behavioral2/memory/2640-2-0x0000000004000000-0x000000000411B000-memory.dmp	family_djvu
behavioral2/memory/1424-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1424-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1424-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1424-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1424-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3720-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3720-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3720-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3720-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3720-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3720-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3720-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3720-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3720-42-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3720-43-0x0000000000400000-0x0000000000537000-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-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2860	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-1-5-21-1705699165-553239100-4129523827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\4b377a9c-a95d-4403-8c3d-0fda464d0a57\\1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe\" --AutoStart"	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.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
20	api.2ip.ua
21	api.2ip.ua
26	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2640 set thread context of 1424	2640	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	91
PID 3460 set thread context of 3720	3460	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	96

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
1424	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe
1424	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe
3720	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe
3720	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2640 wrote to memory of 1424	2640	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	91
PID 2640 wrote to memory of 1424	2640	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	91
PID 2640 wrote to memory of 1424	2640	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	91
PID 2640 wrote to memory of 1424	2640	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	91
PID 2640 wrote to memory of 1424	2640	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	91
PID 2640 wrote to memory of 1424	2640	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	91
PID 2640 wrote to memory of 1424	2640	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	91
PID 2640 wrote to memory of 1424	2640	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	91
PID 2640 wrote to memory of 1424	2640	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	91
PID 2640 wrote to memory of 1424	2640	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	91
PID 1424 wrote to memory of 2860	1424	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	92
PID 1424 wrote to memory of 2860	1424	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	92
PID 1424 wrote to memory of 2860	1424	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	92
PID 1424 wrote to memory of 3460	1424	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	93
PID 1424 wrote to memory of 3460	1424	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	93
PID 1424 wrote to memory of 3460	1424	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	93
PID 3460 wrote to memory of 3720	3460	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	96
PID 3460 wrote to memory of 3720	3460	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	96
PID 3460 wrote to memory of 3720	3460	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	96
PID 3460 wrote to memory of 3720	3460	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	96
PID 3460 wrote to memory of 3720	3460	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	96
PID 3460 wrote to memory of 3720	3460	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	96
PID 3460 wrote to memory of 3720	3460	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	96
PID 3460 wrote to memory of 3720	3460	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	96
PID 3460 wrote to memory of 3720	3460	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	96
PID 3460 wrote to memory of 3720	3460	1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe	96

C:\Users\Admin\AppData\Local\Temp\1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe
"C:\Users\Admin\AppData\Local\Temp\1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2640
- C:\Users\Admin\AppData\Local\Temp\1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe
  "C:\Users\Admin\AppData\Local\Temp\1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1424
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\4b377a9c-a95d-4403-8c3d-0fda464d0a57" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2860
- - C:\Users\Admin\AppData\Local\Temp\1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe
    "C:\Users\Admin\AppData\Local\Temp\1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3460
  - - C:\Users\Admin\AppData\Local\Temp\1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe
      "C:\Users\Admin\AppData\Local\Temp\1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3720

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\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
1KB

MD5
7fb5fa1534dcf77f2125b2403b30a0ee

SHA1
365d96812a69ac0a4611ea4b70a3f306576cc3ea

SHA256
33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f

SHA512
a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

Filesize
436B

MD5
1bfe0a81db078ea084ff82fe545176fe

SHA1
50b116f578bd272922fa8eae94f7b02fd3b88384

SHA256
5ba8817f13eee00e75158bad93076ab474a068c6b52686579e0f728fda68499f

SHA512
37c582f3f09f8d80529608c09041295d1644bcc9de6fb8c4669b05339b0dd870f9525abc5eed53ad06a94b51441275504bc943c336c5beb63b53460ba836ca8d

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
174B

MD5
cab14933ecc860ff7163351f539fd8b0

SHA1
41e16d031388a03255945946fc34eaf04793a58e

SHA256
033319ef55a9353ecf59b8d1ed7a53bc1816750db99d98b976b05dbdee27e964

SHA512
351099ec85d6d532043df4d07986865c0f787295161fd32df8e85f4facabc875c90d45fbd0098266bbdc11ffc4d24d89c1ee50446b8c9e569f76c2ac7f052f21

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

Filesize
170B

MD5
ac240104731b238b349fa1f1e9522840

SHA1
5b4d9a1ce538c9e4a6740019d3c928ed39c812f2

SHA256
c8296bdaf3e1f982de62facbb29e215bb439226b0bad823d4ef1eaaed1f2aa9a

SHA512
6f06d8b0ffd7aadd801c340ce2a7c6e7a07d4937a8e6a7a7920b4a60897dd376284d034eaaef2bb63cbfe41932e4437e03f934368b5e922701f7886bf9a33208

Download Submit
C:\Users\Admin\AppData\Local\4b377a9c-a95d-4403-8c3d-0fda464d0a57\1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089.exe

Filesize
739KB

MD5
9c386f0553f080254ae892482aaa46f6

SHA1
670c07b629d4c4b4afaa0e45a3d5676c3f68aaff

SHA256
1b7f7b031d5c653dbedd8e6b6d42ffa38b578487e5665825372ae817ef912089

SHA512
e6ff14a3c37093c4fdd8db5af88481caba338372f0ba7ba641777cc75c5203f11c5093a9e11b405a1d3705acaeededdcb8b17e79972facea0beca9d6a091742c

Download Submit
memory/1424-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1424-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1424-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1424-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1424-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2640-1-0x0000000003E50000-0x0000000003EEB000-memory.dmp

Filesize
620KB

Download
memory/2640-2-0x0000000004000000-0x000000000411B000-memory.dmp

Filesize
1.1MB

Download
memory/3460-31-0x0000000000400000-0x0000000002101000-memory.dmp

Filesize
29.0MB

Download
memory/3460-45-0x0000000000400000-0x0000000002101000-memory.dmp

Filesize
29.0MB

Download
memory/3720-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3720-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3720-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3720-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3720-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3720-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3720-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3720-42-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3720-43-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3720-24-0x0000000000400000-0x0000000000537000-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