djvu | deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27

General

Target

deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
Size

730KB
MD5

e988bea866be305ac1800e14117fa18d
SHA1

00f9a817988c5e40a01407c09a238e822d86961f
SHA256

deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27
SHA512

7b26ef6f57d35e2ce9b6a48e2ab5ac82d475795c2b468ef9dbb28fee698fe0806eeabd8c6fad8bda31f2a55504e098f5e4b7a9505d7ed0b7d12c68c1bb84a5dc
SSDEEP

12288:mcmbka7xBWQ/8A3xjjS6QwqKZK+MjI+onb7Su7/zYOB4M/eRXQ:zmYwzF7QNN8D74M25Q

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test1/get.php

Attributes

extension
.vepi
offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
payload_url
http://sdfjhuz.com/dl/build2.exe
http://cajgtus.com/files/1/build3.exe
ransomnote
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rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2068-2-0x0000000004A50000-0x0000000004B6B000-memory.dmp	family_djvu
behavioral1/memory/1512-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1512-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1512-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1512-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1512-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4032-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4032-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4032-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4032-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4032-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4032-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4032-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4032-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4032-35-0x0000000000400000-0x0000000000537000-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

Processes:

deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

3244 icacls.exe

pid	process
3244	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b2b2dc64-f828-4f1f-98fa-684a7080c306\\deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe\" --AutoStart"	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.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.

Processes:

flow ioc

7 api.2ip.ua
8 api.2ip.ua
21 api.2ip.ua

flow	ioc
7	api.2ip.ua
8	api.2ip.ua
21	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exedeabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe

description	pid	process	target process
PID 2068 set thread context of 1512	2068	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4028 set thread context of 4032	4028	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exedeabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe

pid	process
1512	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
1512	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
4032	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
4032	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exedeabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exedeabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe

C:\Users\Admin\AppData\Local\Temp\deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
"C:\Users\Admin\AppData\Local\Temp\deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2068

C:\Users\Admin\AppData\Local\Temp\deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
"C:\Users\Admin\AppData\Local\Temp\deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1512

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\b2b2dc64-f828-4f1f-98fa-684a7080c306" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:3244

C:\Users\Admin\AppData\Local\Temp\deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
"C:\Users\Admin\AppData\Local\Temp\deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4028

C:\Users\Admin\AppData\Local\Temp\deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
"C:\Users\Admin\AppData\Local\Temp\deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4032

Network

MITRE ATT&CK Matrix ATT&CK v13

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

1

T1222

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize
1KB

MD5
8df6dedd4dd10eb8211463f82b129e29

SHA1
ffc6e51cf829b481d789d8e3e61f6c7096fbde3e

SHA256
a8400cc21263f2c44ccb301a3a1ef66a1ff009fd4d301362fd778e7b23a386d8

SHA512
25fd6d8684ff8db3d40a8fe33267fd01d6456a84f81c7e579f7508c36558cf731a0ec8a2999a539aa5c1985dc45f7bd20d2a14a343b2326030941858f24c57f4

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
bd4f5eb4a175526c5cc1c077709594e0

SHA1
9b93686c203ebe1c8078b1fe986f860acc24471e

SHA256
71fbf4fb4fad66160d5736369d8384d9f662aa66db4557fafdaf63a382d31acf

SHA512
67a1cac1d1b40fc2d89fb54f1b464ad330c5990e7533ebaba2b1865e064d904ce70c60bb6e1ba434a8d810a02ee08a39ef09c4f3b6ffc869ee5d3cd90e66464b

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize
392B

MD5
fb296c2c1addfe8649087c4a8bd6b694

SHA1
e8dbd31c467c464760870c4fe3711ba2a478908d

SHA256
a5ae0bd2bd2ba759defd6f5c4221b3f2aca71935308ef1b4723c6d18ab5d78f6

SHA512
22f32b27ab44f32a65a9ebd45fc9d32168490ec0498afd6c78d8052677e93dcf025510d47e130d31533cba941f26290070e8324c6caf5be5b64a3fca1dfefbe5

Download Submit
C:\Users\Admin\AppData\Local\b2b2dc64-f828-4f1f-98fa-684a7080c306\deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
Filesize
730KB

MD5
e988bea866be305ac1800e14117fa18d

SHA1
00f9a817988c5e40a01407c09a238e822d86961f

SHA256
deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27

SHA512
7b26ef6f57d35e2ce9b6a48e2ab5ac82d475795c2b468ef9dbb28fee698fe0806eeabd8c6fad8bda31f2a55504e098f5e4b7a9505d7ed0b7d12c68c1bb84a5dc

Download Submit
memory/1512-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1512-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1512-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1512-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1512-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2068-2-0x0000000004A50000-0x0000000004B6B000-memory.dmp

Filesize
1.1MB

Download
memory/2068-1-0x00000000049B0000-0x0000000004A50000-memory.dmp

Filesize
640KB

Download
memory/4032-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4032-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4032-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4032-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4032-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4032-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4032-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4032-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4032-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 2068 wrote to memory of 1512	2068	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 2068 wrote to memory of 1512	2068	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 2068 wrote to memory of 1512	2068	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 2068 wrote to memory of 1512	2068	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 2068 wrote to memory of 1512	2068	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 2068 wrote to memory of 1512	2068	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 2068 wrote to memory of 1512	2068	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 2068 wrote to memory of 1512	2068	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 2068 wrote to memory of 1512	2068	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 2068 wrote to memory of 1512	2068	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 1512 wrote to memory of 3244	1512	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	icacls.exe
PID 1512 wrote to memory of 3244	1512	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	icacls.exe
PID 1512 wrote to memory of 3244	1512	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	icacls.exe
PID 1512 wrote to memory of 4028	1512	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 1512 wrote to memory of 4028	1512	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 1512 wrote to memory of 4028	1512	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4028 wrote to memory of 4032	4028	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4028 wrote to memory of 4032	4028	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4028 wrote to memory of 4032	4028	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4028 wrote to memory of 4032	4028	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4028 wrote to memory of 4032	4028	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4028 wrote to memory of 4032	4028	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4028 wrote to memory of 4032	4028	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4028 wrote to memory of 4032	4028	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4028 wrote to memory of 4032	4028	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4028 wrote to memory of 4032	4028	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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