djvu | 2dcb65f18ee5ff985d4448c2bc01ecff8c1e379d969ef09591789dde8dd1d534

General

Target

file.exe
Size

841KB
MD5

89f6a0761eb024c46520a74abb7868a9
SHA1

46f30dd561d328e61261ebe13f86340d0641de68
SHA256

2dcb65f18ee5ff985d4448c2bc01ecff8c1e379d969ef09591789dde8dd1d534
SHA512

61e5074a24deb928796edb7ccc2b57039aa6fbe6b9b8b216faa8e9e8dd549fbb84dae1e0ddbd2f142c92cb60dcb3075fbe05edf51255500647a59dea18a62316
SSDEEP

24576:5RvxJ2drWwS/kpBuOYNT0CpzbyfaQBQ246qgBvk:7vxJ2EwS/kpn6h246Vk

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.hhaz
offline_id
gG3wF8nDWRqLztkHPAxMzpvNVlmLBMgQKmKiCNt1
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-5zKXJl7cwi Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. 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: 0835ASdw

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

resource	yara_rule
behavioral2/memory/3948-2-0x0000000002A90000-0x0000000002BAB000-memory.dmp	family_djvu
behavioral2/memory/3096-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3096-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3096-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3096-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3096-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4436-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4436-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4436-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4436-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4436-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4436-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4436-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4436-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4436-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4436-38-0x0000000000400000-0x0000000000537000-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-1-5-21-596315103-1488671723-776734015-1000\Control Panel\International\Geo\Nation	file.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4100	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-1-5-21-596315103-1488671723-776734015-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\3f43ed5e-b986-49c5-afde-3ec692eca540\\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
36	api.2ip.ua
19	api.2ip.ua
21	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3948 set thread context of 3096	3948	file.exe	90
PID 2368 set thread context of 4436	2368	file.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
3096	file.exe
3096	file.exe
4436	file.exe
4436	file.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3948 wrote to memory of 3096	3948	file.exe	90
PID 3948 wrote to memory of 3096	3948	file.exe	90
PID 3948 wrote to memory of 3096	3948	file.exe	90
PID 3948 wrote to memory of 3096	3948	file.exe	90
PID 3948 wrote to memory of 3096	3948	file.exe	90
PID 3948 wrote to memory of 3096	3948	file.exe	90
PID 3948 wrote to memory of 3096	3948	file.exe	90
PID 3948 wrote to memory of 3096	3948	file.exe	90
PID 3948 wrote to memory of 3096	3948	file.exe	90
PID 3948 wrote to memory of 3096	3948	file.exe	90
PID 3096 wrote to memory of 4100	3096	file.exe	91
PID 3096 wrote to memory of 4100	3096	file.exe	91
PID 3096 wrote to memory of 4100	3096	file.exe	91
PID 3096 wrote to memory of 2368	3096	file.exe	92
PID 3096 wrote to memory of 2368	3096	file.exe	92
PID 3096 wrote to memory of 2368	3096	file.exe	92
PID 2368 wrote to memory of 4436	2368	file.exe	94
PID 2368 wrote to memory of 4436	2368	file.exe	94
PID 2368 wrote to memory of 4436	2368	file.exe	94
PID 2368 wrote to memory of 4436	2368	file.exe	94
PID 2368 wrote to memory of 4436	2368	file.exe	94
PID 2368 wrote to memory of 4436	2368	file.exe	94
PID 2368 wrote to memory of 4436	2368	file.exe	94
PID 2368 wrote to memory of 4436	2368	file.exe	94
PID 2368 wrote to memory of 4436	2368	file.exe	94
PID 2368 wrote to memory of 4436	2368	file.exe	94

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:3948
- 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:3096
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\3f43ed5e-b986-49c5-afde-3ec692eca540" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4100
- - 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:2368
  - - C:\Users\Admin\AppData\Local\Temp\file.exe
      "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4436

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
41ff3625b90b75348d1313e787e41cd1

SHA1
b9034fd0f7b6dfb7a1fc8ad3b2e13425205789e1

SHA256
e79d41c0938399b745f9aa779e5606cc5554907b1d01c75cc77ff04f8dd1c15c

SHA512
f795a72e365bcb1ad4a97d409e139d888d9d9bd02b4c4feed9ab4fb1332afb4907840bc72ed2c3460ec1875902ee433dd0a8b8dee5734c2cd3b89ac337a2d222

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
570a55dd22f1af496091e7685938d921

SHA1
85fc453a9fc2bc80e2c729360d7c4d48bd0cd8e4

SHA256
1337c2aceb47c01efc1b89ff6f9fa482bb6aa9587e5d4f2fd394884fbc2ba5e4

SHA512
c5d9bb132b96b85cea86bb3100c6f4707a400e158cc8c7a74a259e612d789eff9afc77d9ff6726ac94d172d0253956bc5f56c8497b5b18d6e428d0a7956b5a9c

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

Filesize
392B

MD5
6d43c8f3273992b3e15cf747a7510160

SHA1
6fed5d41fc61534375f82d0483a454a7d47fa3e3

SHA256
7f3633643940045b407a95c14881ac4e339ea38567712f5b131f366d2281cf0e

SHA512
afed3ee50a696cc71702b154651598ef6bbee0460240c42adef5c82531e320b8e7b50223baf4f1b2d039bb065c80942f02398b882207eb32fa84ce6b0090d574

Download Submit
C:\Users\Admin\AppData\Local\3f43ed5e-b986-49c5-afde-3ec692eca540\file.exe

Filesize
474KB

MD5
2cc3ee4d6e920979adf5664374ea849c

SHA1
c5b9f131a5d98c8ad65d5858933524ac2fe5b690

SHA256
01abcde8de2896cc57c636f83e2887ac44422b847e9a29016bdc9718b97be074

SHA512
41c6e5bb2f3c345eb1c91f21ac2804c97c0b022e6bb42d38673374f072c3c17878859aa955d3561ff0dcfcb2cd096f77f7cf3ba573580176b0fcc51f5bd42323

Download Submit
memory/2368-18-0x0000000002820000-0x00000000028B4000-memory.dmp

Filesize
592KB

Download
memory/3096-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3096-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3096-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3096-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3096-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3948-1-0x0000000002980000-0x0000000002A20000-memory.dmp

Filesize
640KB

Download
memory/3948-2-0x0000000002A90000-0x0000000002BAB000-memory.dmp

Filesize
1.1MB

Download
memory/4436-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4436-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4436-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4436-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4436-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4436-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4436-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4436-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4436-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4436-38-0x0000000000400000-0x0000000000537000-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