djvu | 223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27

General

Target

223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
Size

806KB
MD5

d6c0214de97b020e1a33188c7ab84983
SHA1

983adc952eddabf756d871dfb0ec4f9d01135d90
SHA256

223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27
SHA512

15c532b3d89f4b1d204ba18095f49a77d9978b32c6957ed83bb1f956698e574dd9e01ab1f50ad105081254b6ea9d9d4076f40ba81e671cf2990222928b82c2b0
SSDEEP

12288:DqipRlhCwD6SeKI/JQjZjEqrA4AcsEHW3gRO/Vra39II+U:HxD6Ue6ZjPJvREVrc+U

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.bgzq
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
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 17 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1612-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1612-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4244-3-0x0000000003780000-0x000000000389B000-memory.dmp	family_djvu
behavioral1/memory/1612-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1612-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1612-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2348-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2348-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2348-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2348-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2348-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2348-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2348-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2348-42-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2348-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2348-43-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2348-44-0x0000000000400000-0x0000000000537000-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:

223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

2008 icacls.exe

pid	process
2008	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\7c8c10d0-c58f-4688-87f9-ea7049bba6d9\\223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe\" --AutoStart"	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.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

13 api.2ip.ua
1 api.2ip.ua
2 api.2ip.ua

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe

description	pid	process	target process
PID 4244 set thread context of 1612	4244	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 4604 set thread context of 2348	4604	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.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:

223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe

pid	process
1612	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
1612	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
2348	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
2348	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe

C:\Users\Admin\AppData\Local\Temp\223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
"C:\Users\Admin\AppData\Local\Temp\223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4244

C:\Users\Admin\AppData\Local\Temp\223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
"C:\Users\Admin\AppData\Local\Temp\223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1612

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\7c8c10d0-c58f-4688-87f9-ea7049bba6d9" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:2008

C:\Users\Admin\AppData\Local\Temp\223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
"C:\Users\Admin\AppData\Local\Temp\223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4604

C:\Users\Admin\AppData\Local\Temp\223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
"C:\Users\Admin\AppData\Local\Temp\223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2348

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
f6eba5b4da2a6729ce49739376f04e87

SHA1
564f12037877a6b7cf73c4b130882f27375d6e2c

SHA256
b5d2109699d2e485bf989aa7595ab2877b6d59fa781364b9b2a6b64652a3a2e1

SHA512
a9327f2592d15eae2703bfe202c3c85d3353aeef6a0863571e9a15b7d73854bd8ee83c2e6e0f190d40ee3b471c43f98068f6f4bda2283b8d33b62e7cb29ec9a5

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
ceea6fcd3bb025cde9833d0dec6371ff

SHA1
a948e8b75d80fc89c0e9b717e9881227b872076b

SHA256
eba638744e265faec50ff62631237f2094bfe97d068b44d647d02e13305c28a8

SHA512
2ca9774a6e3bc24c4e5de0d3e406eeb987da05a4e353a0cb0c2d2647917273b04ab3f52d7088908627bb115b59d74644614c796b2e57b1b9c6daf387acc1db66

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

MD5
606244b6aa6be68173eca97dab04dbe4

SHA1
ab5e02ebde800e89f18f879410a44f17b5c4bc43

SHA256
9a493ea1a1224d5459c8f3aa466367e2fd655e58294eb28f9db148c189dd7f9e

SHA512
af0d5311fa6e5de170c85b748877bcf718173e67f54cf2fcc4f3f582b7a179d0998153d793c463689b2b33544ba8e03a93182b83491986928e34e3ad609a10ae

Download Submit
C:\Users\Admin\AppData\Local\7c8c10d0-c58f-4688-87f9-ea7049bba6d9\223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
Filesize
806KB

MD5
d6c0214de97b020e1a33188c7ab84983

SHA1
983adc952eddabf756d871dfb0ec4f9d01135d90

SHA256
223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27

SHA512
15c532b3d89f4b1d204ba18095f49a77d9978b32c6957ed83bb1f956698e574dd9e01ab1f50ad105081254b6ea9d9d4076f40ba81e671cf2990222928b82c2b0

Download Submit
memory/1612-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1612-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1612-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1612-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1612-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2348-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2348-42-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2348-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2348-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2348-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2348-43-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2348-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2348-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2348-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2348-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2348-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4244-1-0x0000000001D40000-0x0000000001DE0000-memory.dmp

Filesize
640KB

Download
memory/4244-3-0x0000000003780000-0x000000000389B000-memory.dmp

Filesize
1.1MB

Download
memory/4604-23-0x0000000001C80000-0x0000000001D19000-memory.dmp

Filesize
612KB

Download

description	pid	process	target process
PID 4244 wrote to memory of 1612	4244	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 4244 wrote to memory of 1612	4244	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 4244 wrote to memory of 1612	4244	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 4244 wrote to memory of 1612	4244	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 4244 wrote to memory of 1612	4244	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 4244 wrote to memory of 1612	4244	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 4244 wrote to memory of 1612	4244	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 4244 wrote to memory of 1612	4244	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 4244 wrote to memory of 1612	4244	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 4244 wrote to memory of 1612	4244	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 1612 wrote to memory of 2008	1612	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	icacls.exe
PID 1612 wrote to memory of 2008	1612	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	icacls.exe
PID 1612 wrote to memory of 2008	1612	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	icacls.exe
PID 1612 wrote to memory of 4604	1612	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 1612 wrote to memory of 4604	1612	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 1612 wrote to memory of 4604	1612	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 4604 wrote to memory of 2348	4604	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 4604 wrote to memory of 2348	4604	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 4604 wrote to memory of 2348	4604	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 4604 wrote to memory of 2348	4604	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 4604 wrote to memory of 2348	4604	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 4604 wrote to memory of 2348	4604	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 4604 wrote to memory of 2348	4604	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 4604 wrote to memory of 2348	4604	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 4604 wrote to memory of 2348	4604	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe
PID 4604 wrote to memory of 2348	4604	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe	223bab416599b5a2db4cff442e7c87161d2f9a4be70e0e51ede01612c3b6ba27.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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