djvu | 4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0

General

Target

4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
Size

797KB
MD5

0074b8bc6cced95d99bc9098abcef625
SHA1

21880dfb0aceebc7ddfa7b8056343f3006ff39d2
SHA256

4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0
SHA512

38e7f0e1a1084ff3a28025c3ff36dcd09acaba48df53d66fcec647bfd95871ee19434d59f65c2e19bd8b27a0a66f2139981f5eb3c7f013044eca98af86404b3c
SSDEEP

12288:owgiCMEEeumDQQ92wfGw5N6qIao9wnrEYH0pLl9anzo3lARfCeDIxU:hChumkwff6p9EIs6SoVA48I

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 16 IoCs

Processes:

resource	yara_rule
behavioral1/memory/4520-2-0x0000000003CC0000-0x0000000003DDB000-memory.dmp	family_djvu
behavioral1/memory/60-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/60-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/60-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/60-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/60-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4472-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4472-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4472-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4472-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4472-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4472-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4472-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1856-37-0x0000000000400000-0x0000000002013000-memory.dmp	family_djvu
behavioral1/memory/4472-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4472-39-0x0000000000400000-0x0000000000537000-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:

4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

3460 icacls.exe

pid	process
3460	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b18e8354-a595-4346-a020-ee7543340a15\\4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe\" --AutoStart"	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.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

2 api.2ip.ua
21 api.2ip.ua
1 api.2ip.ua

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe

description	pid	process	target process
PID 4520 set thread context of 60	4520	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 1856 set thread context of 4472	1856	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.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:

4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe

pid	process
60	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
60	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
4472	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
4472	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe

C:\Users\Admin\AppData\Local\Temp\4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
"C:\Users\Admin\AppData\Local\Temp\4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4520

C:\Users\Admin\AppData\Local\Temp\4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
"C:\Users\Admin\AppData\Local\Temp\4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:60

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\b18e8354-a595-4346-a020-ee7543340a15" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:3460

C:\Users\Admin\AppData\Local\Temp\4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
"C:\Users\Admin\AppData\Local\Temp\4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1856

C:\Users\Admin\AppData\Local\Temp\4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
"C:\Users\Admin\AppData\Local\Temp\4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4472

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
9e130b50184e39e32205c9dd3befee15

SHA1
150b8bfb3208d3a854996e02c1470d81530335b5

SHA256
7b5bd8bc8ac2cd655c212c4790e5d9a259046730a9f0bb51616b036da55d2c50

SHA512
3cf76690e692c874792fa99d6358ebdd3596bab33bede653067375fc7de617eb7f150f52e640d34b2d51dcbe39c5bb88381bdc0279054ab65d5f1492d89f648f

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
a22821a5c0ef09439588f67a06234258

SHA1
7dd350deb2635fdffe81101c1fcb75e4dce3b6ec

SHA256
75d1f4c0b5b87a047dec3c359de7f01fbd6f9e70b90f00ae1cfa5a9567383438

SHA512
7cdc42fcac008b1a4ae6d0455f1e6bc3458ebedd9c7c1a9f10867d195757c9f0f2046228413ed6d382a73baddb1a531d244fe82779d168e9664cf462dd334b08

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

MD5
0b5cacc61dcd3445da17b06af1ea63c9

SHA1
fd28bc04fa3c2d96584162050b76b46ed88433f9

SHA256
9683ad821693d3519d8c463e08b86564feaa8ea14409826d57edfb4629e7f82f

SHA512
4af583b1830f2a834fcd2a1d3b44450fcc9c6af242a84cbd4ca13429d8027291e59aa4bd00a10e235bdf963c084d67eae76a5fac69b78f24bce135e071b520f5

Download Submit
C:\Users\Admin\AppData\Local\b18e8354-a595-4346-a020-ee7543340a15\4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
Filesize
797KB

MD5
0074b8bc6cced95d99bc9098abcef625

SHA1
21880dfb0aceebc7ddfa7b8056343f3006ff39d2

SHA256
4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0

SHA512
38e7f0e1a1084ff3a28025c3ff36dcd09acaba48df53d66fcec647bfd95871ee19434d59f65c2e19bd8b27a0a66f2139981f5eb3c7f013044eca98af86404b3c

Download Submit
memory/60-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/60-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/60-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/60-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/60-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1856-37-0x0000000000400000-0x0000000002013000-memory.dmp

Filesize
28.1MB

Download
memory/1856-23-0x0000000000400000-0x0000000002013000-memory.dmp

Filesize
28.1MB

Download
memory/4472-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4472-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4472-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4472-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4472-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4472-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4472-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4472-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4472-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4520-2-0x0000000003CC0000-0x0000000003DDB000-memory.dmp

Filesize
1.1MB

Download
memory/4520-1-0x00000000020F0000-0x000000000218D000-memory.dmp

Filesize
628KB

Download

description	pid	process	target process
PID 4520 wrote to memory of 60	4520	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4520 wrote to memory of 60	4520	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4520 wrote to memory of 60	4520	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4520 wrote to memory of 60	4520	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4520 wrote to memory of 60	4520	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4520 wrote to memory of 60	4520	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4520 wrote to memory of 60	4520	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4520 wrote to memory of 60	4520	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4520 wrote to memory of 60	4520	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 4520 wrote to memory of 60	4520	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 60 wrote to memory of 3460	60	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	icacls.exe
PID 60 wrote to memory of 3460	60	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	icacls.exe
PID 60 wrote to memory of 3460	60	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	icacls.exe
PID 60 wrote to memory of 1856	60	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 60 wrote to memory of 1856	60	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 60 wrote to memory of 1856	60	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 1856 wrote to memory of 4472	1856	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 1856 wrote to memory of 4472	1856	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 1856 wrote to memory of 4472	1856	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 1856 wrote to memory of 4472	1856	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 1856 wrote to memory of 4472	1856	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 1856 wrote to memory of 4472	1856	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 1856 wrote to memory of 4472	1856	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 1856 wrote to memory of 4472	1856	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 1856 wrote to memory of 4472	1856	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe
PID 1856 wrote to memory of 4472	1856	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe	4e488dbc602465377e47c2b7d832baaabdd3b58f1b243ff7fb67d9be3b634da0.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads