djvu | 8ed183df76d08024f15e051f4f5711535dde6372ff4beafecfff07f82e846800

Analysis

max time kernel
139s
max time network
174s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
01-01-2024 15:12

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General

Target

2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
Size

701KB
MD5

6741d5aef031c6b1e51f386fefc1225e
SHA1

95ea397aed18143bc18da02c21e693c44e373f90
SHA256

2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9
SHA512

90034da6a496dfcf2b7227b2aa585983cbe80f9a69586743eb219035c1bdab59eaa912139de0e576db2194383f1c70e16042736c1a593fd7e7a4ea93d515df5d
SSDEEP

12288:ZohXTLkKkP0rRl6CRHCwWshS7JUc9ouDCwI/d9V5qyBmPjCkuYDaFB:ZYTLG2U/wWRVUYoUCwCVdmr7uma

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://zexeq.com/lancer/get.php

Attributes

extension
.qarj
offline_id
VrBq0iLIRHjQLgVRLsN1WK8yFkTCRDCCvPkwnHt1
payload_url
http://uaery.top/dl/build2.exe

http://zexeq.com/files/1/build3.exe
ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-zUVSNg4KRZ Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0664Iopd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

Processes:

resource	yara_rule
behavioral12/memory/1208-2-0x00000000023A0000-0x00000000024BB000-memory.dmp	family_djvu
behavioral12/memory/3296-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral12/memory/3296-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral12/memory/3296-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral12/memory/3296-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral12/memory/3296-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral12/memory/4196-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral12/memory/4196-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral12/memory/4196-23-0x0000000000400000-0x0000000000537000-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:

2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

320 icacls.exe

pid	process
320	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\7b1d0a64-d2bb-4806-8a41-e8daa754c418\\2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe\" --AutoStart"	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.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

20 api.2ip.ua
30 api.2ip.ua

flow	ioc
20	api.2ip.ua
30	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe

description	pid	process	target process
PID 1208 set thread context of 3296	1208	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 3916 set thread context of 4196	3916	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.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

620 4196 WerFault.exe 2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe

pid	pid_target	process	target process
620	4196	WerFault.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe

pid	process
3296	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
3296	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe

C:\Users\Admin\AppData\Local\Temp\2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
"C:\Users\Admin\AppData\Local\Temp\2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1208

C:\Users\Admin\AppData\Local\Temp\2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
"C:\Users\Admin\AppData\Local\Temp\2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3296

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\7b1d0a64-d2bb-4806-8a41-e8daa754c418" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:320

C:\Users\Admin\AppData\Local\Temp\2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
"C:\Users\Admin\AppData\Local\Temp\2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3916

C:\Users\Admin\AppData\Local\Temp\2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
"C:\Users\Admin\AppData\Local\Temp\2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe" --Admin IsNotAutoStart IsNotTask
4⤵
PID:4196

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4196 -s 568
5⤵
- Program crash
PID:620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4196 -ip 4196
1⤵
PID:1516

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\7b1d0a64-d2bb-4806-8a41-e8daa754c418\2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe

Filesize
701KB

MD5
6741d5aef031c6b1e51f386fefc1225e

SHA1
95ea397aed18143bc18da02c21e693c44e373f90

SHA256
2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9

SHA512
90034da6a496dfcf2b7227b2aa585983cbe80f9a69586743eb219035c1bdab59eaa912139de0e576db2194383f1c70e16042736c1a593fd7e7a4ea93d515df5d

Download Submit
memory/1208-1-0x00000000022D0000-0x000000000236B000-memory.dmp

Filesize
620KB

Download
memory/1208-2-0x00000000023A0000-0x00000000024BB000-memory.dmp

Filesize
1.1MB

Download
memory/3296-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3296-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3296-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3296-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3296-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3916-18-0x0000000002260000-0x0000000002301000-memory.dmp

Filesize
644KB

Download
memory/4196-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4196-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4196-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 1208 wrote to memory of 3296	1208	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 1208 wrote to memory of 3296	1208	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 1208 wrote to memory of 3296	1208	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 1208 wrote to memory of 3296	1208	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 1208 wrote to memory of 3296	1208	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 1208 wrote to memory of 3296	1208	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 1208 wrote to memory of 3296	1208	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 1208 wrote to memory of 3296	1208	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 1208 wrote to memory of 3296	1208	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 1208 wrote to memory of 3296	1208	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 3296 wrote to memory of 320	3296	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	icacls.exe
PID 3296 wrote to memory of 320	3296	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	icacls.exe
PID 3296 wrote to memory of 320	3296	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	icacls.exe
PID 3296 wrote to memory of 3916	3296	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 3296 wrote to memory of 3916	3296	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 3296 wrote to memory of 3916	3296	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 3916 wrote to memory of 4196	3916	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 3916 wrote to memory of 4196	3916	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 3916 wrote to memory of 4196	3916	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 3916 wrote to memory of 4196	3916	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 3916 wrote to memory of 4196	3916	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 3916 wrote to memory of 4196	3916	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 3916 wrote to memory of 4196	3916	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 3916 wrote to memory of 4196	3916	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 3916 wrote to memory of 4196	3916	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe
PID 3916 wrote to memory of 4196	3916	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe	2b5109e9a249a795a412a3961aae3e5b576a233d9681f5ec0b4d88ce009b6ed9.exe