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
behavioral2/memory/4064-2-0x0000000004AC0000-0x0000000004BDB000-memory.dmp	family_djvu
behavioral2/memory/2124-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2124-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2124-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2124-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2124-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5108-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5108-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5108-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5108-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5108-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5108-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5108-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5108-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5108-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

3492 icacls.exe

pid	process
3492	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-1-5-21-1696768468-2170909707-4198977321-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\4e082523-a331-4abb-8447-307b7bdaff91\\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

1 api.2ip.ua
2 api.2ip.ua
6 api.2ip.ua

flow	ioc
1	api.2ip.ua
2	api.2ip.ua
6	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exedeabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe

description	pid	process	target process
PID 4064 set thread context of 2124	4064	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4708 set thread context of 5108	4708	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
2124	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
2124	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
5108	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
5108	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:4064

C:\Users\Admin\AppData\Local\Temp\deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
"C:\Users\Admin\AppData\Local\Temp\deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2124

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\4e082523-a331-4abb-8447-307b7bdaff91" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:3492

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:4708

C:\Users\Admin\AppData\Local\Temp\deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
"C:\Users\Admin\AppData\Local\Temp\deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:5108

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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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
a126d287abb35532813d055937d1ecac

SHA1
3206ed0ec7f30adeba0b266a94663eaef271619b

SHA256
053f93ec161bf2a4dfa3ca368093cdb67f9548d152315c8c792df8bccfbce6ae

SHA512
893770d85f13019f7569e32b2cc7cfdf2af10066101c659e335d619896d4d65665e64f428fd7596202be902f152011c16a02dec3f172848f3fe1f0f21b84e746

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

MD5
63f5f3a000fb27c2ea99c3b0446739fd

SHA1
cc5c1744ab0cdb7f16caeddd5d3bb87eddb82e2f

SHA256
d2cf2354ca4dce436e514df17f25d323b6cec03032c5449fffd29e40d02d1b98

SHA512
b7e2e34a1cc4e82015247aa0d7915e0dc02159e24746e6aee2850f01b81768d16ee881cc6725c7e145a88e791c052a2835d313bfbf339689f984e79d9eaea9c2

Download Submit
C:\Users\Admin\AppData\Local\4e082523-a331-4abb-8447-307b7bdaff91\deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
Filesize
730KB

MD5
e988bea866be305ac1800e14117fa18d

SHA1
00f9a817988c5e40a01407c09a238e822d86961f

SHA256
deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27

SHA512
7b26ef6f57d35e2ce9b6a48e2ab5ac82d475795c2b468ef9dbb28fee698fe0806eeabd8c6fad8bda31f2a55504e098f5e4b7a9505d7ed0b7d12c68c1bb84a5dc

Download Submit
memory/2124-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2124-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2124-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2124-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2124-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4064-2-0x0000000004AC0000-0x0000000004BDB000-memory.dmp

Filesize
1.1MB

Download
memory/4064-1-0x0000000004A20000-0x0000000004ABE000-memory.dmp

Filesize
632KB

Download
memory/5108-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5108-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5108-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5108-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5108-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5108-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5108-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5108-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5108-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 4064 wrote to memory of 2124	4064	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4064 wrote to memory of 2124	4064	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4064 wrote to memory of 2124	4064	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4064 wrote to memory of 2124	4064	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4064 wrote to memory of 2124	4064	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4064 wrote to memory of 2124	4064	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4064 wrote to memory of 2124	4064	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4064 wrote to memory of 2124	4064	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4064 wrote to memory of 2124	4064	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4064 wrote to memory of 2124	4064	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 2124 wrote to memory of 3492	2124	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	icacls.exe
PID 2124 wrote to memory of 3492	2124	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	icacls.exe
PID 2124 wrote to memory of 3492	2124	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	icacls.exe
PID 2124 wrote to memory of 4708	2124	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 2124 wrote to memory of 4708	2124	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 2124 wrote to memory of 4708	2124	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4708 wrote to memory of 5108	4708	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4708 wrote to memory of 5108	4708	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4708 wrote to memory of 5108	4708	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4708 wrote to memory of 5108	4708	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4708 wrote to memory of 5108	4708	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4708 wrote to memory of 5108	4708	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4708 wrote to memory of 5108	4708	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4708 wrote to memory of 5108	4708	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4708 wrote to memory of 5108	4708	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe
PID 4708 wrote to memory of 5108	4708	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe	deabbe8cd2c7c9e6778a0c210df17ccf9d74f3bb5494cf1b3c15fe261e029b27.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads