djvu | 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c

General

Target

884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
Size

728KB
MD5

4b82d5ef17c6f3905db22541c87894b3
SHA1

4574488beb1c852d724535b8868ea0211fe9a7e8
SHA256

884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c
SHA512

4e0ad8fce5e492bfbb9641b27a91925e1446146045425863f4c6ff6b6281f902dcdcd3471d11ffed026a8f661c2c7c7ebd75b92a3d691c930b42437ff6d06ebb
SSDEEP

12288:4pJPsIWiujU52CnpB8gj9E40NXBP9/1gOoiyQ1PcL81f3oMw+q0:WOiuj/2X8gJE4yRPjodQyL8h3y+q0

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 9 IoCs

Processes:

resource	yara_rule
behavioral2/memory/788-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/788-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4040-4-0x0000000002230000-0x000000000234B000-memory.dmp	family_djvu
behavioral2/memory/788-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/788-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/788-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4684-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4684-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4684-20-0x0000000000400000-0x0000000000537000-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:

884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

1004 icacls.exe

pid	process
1004	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\d08ba524-2b03-406e-9f22-1e79a7c6434f\\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe\" --AutoStart"	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe

Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

6 api.2ip.ua
7 api.2ip.ua

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe

description	pid	process	target process
PID 4040 set thread context of 788	4040	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 3288 set thread context of 4684	3288	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe

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

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3556 4684 WerFault.exe 884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe

pid	pid_target	process	target process
3556	4684	WerFault.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe

pid	process
788	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
788	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe

C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
"C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4040

C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
"C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:788

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\d08ba524-2b03-406e-9f22-1e79a7c6434f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:1004

C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
"C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3288

C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
"C:\Users\Admin\AppData\Local\Temp\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe" --Admin IsNotAutoStart IsNotTask
4⤵
PID:4684

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4684 -s 572
5⤵
- Program crash
PID:3556

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4684 -ip 4684
1⤵
PID:4164

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4436,i,7012731823941922179,12386606396608877869,262144 --variations-seed-version --mojo-platform-channel-handle=4024 /prefetch:8
1⤵
PID:4672

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

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Downloads

C:\Users\Admin\AppData\Local\d08ba524-2b03-406e-9f22-1e79a7c6434f\884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
Filesize
728KB

MD5
4b82d5ef17c6f3905db22541c87894b3

SHA1
4574488beb1c852d724535b8868ea0211fe9a7e8

SHA256
884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c

SHA512
4e0ad8fce5e492bfbb9641b27a91925e1446146045425863f4c6ff6b6281f902dcdcd3471d11ffed026a8f661c2c7c7ebd75b92a3d691c930b42437ff6d06ebb

Download Submit
memory/788-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/788-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/788-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/788-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/788-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3288-21-0x0000000000400000-0x00000000004FF000-memory.dmp

Filesize
1020KB

Download
memory/4040-1-0x0000000002190000-0x0000000002226000-memory.dmp

Filesize
600KB

Download
memory/4040-4-0x0000000002230000-0x000000000234B000-memory.dmp

Filesize
1.1MB

Download
memory/4684-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4684-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4684-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 4040 wrote to memory of 788	4040	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 4040 wrote to memory of 788	4040	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 4040 wrote to memory of 788	4040	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 4040 wrote to memory of 788	4040	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 4040 wrote to memory of 788	4040	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 4040 wrote to memory of 788	4040	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 4040 wrote to memory of 788	4040	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 4040 wrote to memory of 788	4040	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 4040 wrote to memory of 788	4040	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 4040 wrote to memory of 788	4040	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 788 wrote to memory of 1004	788	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	icacls.exe
PID 788 wrote to memory of 1004	788	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	icacls.exe
PID 788 wrote to memory of 1004	788	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	icacls.exe
PID 788 wrote to memory of 3288	788	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 788 wrote to memory of 3288	788	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 788 wrote to memory of 3288	788	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 3288 wrote to memory of 4684	3288	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 3288 wrote to memory of 4684	3288	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 3288 wrote to memory of 4684	3288	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 3288 wrote to memory of 4684	3288	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 3288 wrote to memory of 4684	3288	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 3288 wrote to memory of 4684	3288	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 3288 wrote to memory of 4684	3288	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 3288 wrote to memory of 4684	3288	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 3288 wrote to memory of 4684	3288	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe
PID 3288 wrote to memory of 4684	3288	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe	884288ae594b1b0e7bbbf748ee01e9f48e213e27d810fc9e8582421c8c59d78c.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads