djvu | 5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073

Analysis

max time kernel
49s
max time network
52s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
15-06-2024 12:15

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General

Target

5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
Size

769KB
MD5

6b3c3b621f4964f232d23c7b32a2e486
SHA1

dc7a1111a7fa4380b42dfa8e6d1b22b338aa10fc
SHA256

5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073
SHA512

78b0b893295e5c8c811618638bfb9fcca2daef20b209ef4f0aeb400372b9827ff8b01325427ee41091dfb9d6b3c334510a6f2b4cccf407970cf72adb0bb2b293
SSDEEP

24576:nAVmJoIjqT53ve6LT/8EMuuV1y5SYVWuQWJb:AoJ/Q5XHz+7yA5E

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://habrafa.com/test1/get.php

Attributes

extension
.cdpo
offline_id
Bn3q97hwLouKbhkQRNO4SeV07gjdEQVm8NKhg0t1
payload_url
http://brusuax.com/dl/build2.exe
http://habrafa.com/files/1/build3.exe
ransomnote
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rsa_pubkey.plain

Signatures

Detected Djvu ransomware 12 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2120-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2136-6-0x0000000001DD0000-0x0000000001EEB000-memory.dmp	family_djvu
behavioral1/memory/2120-7-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2120-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2120-12-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2496-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2496-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1556-24-0x0000000140000000-0x00000001405E8000-memory.dmp	family_djvu
behavioral1/memory/2496-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2496-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2496-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2476-29-0x0000000000400000-0x00000000004C4000-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

2624 icacls.exe

pid	process
2624	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\4aa34f98-1391-449a-a976-d7615cae4289\\5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe\" --AutoStart"	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.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

3 api.2ip.ua
7 api.2ip.ua

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe

description	pid	process	target process
PID 2136 set thread context of 2120	2136	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2476 set thread context of 2496	2476	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exetaskmgr.exe5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe

pid	process
2120	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
2120	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
2496	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
2496	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

taskmgr.exe

pid process

1556 taskmgr.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskmgr.exe

description pid process

Token: SeDebugPrivilege 1556 taskmgr.exe

description	pid	process
Token: SeDebugPrivilege	1556	taskmgr.exe

Suspicious use of FindShellTrayWindow 43 IoCs

Processes:

taskmgr.exe

pid	process
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe

Suspicious use of SendNotifyMessage 43 IoCs

Processes:

taskmgr.exe

pid	process
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe
1556	taskmgr.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe

C:\Users\Admin\AppData\Local\Temp\5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
"C:\Users\Admin\AppData\Local\Temp\5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2136

C:\Users\Admin\AppData\Local\Temp\5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
"C:\Users\Admin\AppData\Local\Temp\5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2120

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\4aa34f98-1391-449a-a976-d7615cae4289" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:2624

C:\Users\Admin\AppData\Local\Temp\5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
"C:\Users\Admin\AppData\Local\Temp\5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2476

C:\Users\Admin\AppData\Local\Temp\5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
"C:\Users\Admin\AppData\Local\Temp\5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2496

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1556

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\4aa34f98-1391-449a-a976-d7615cae4289\5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
Filesize
769KB

MD5
6b3c3b621f4964f232d23c7b32a2e486

SHA1
dc7a1111a7fa4380b42dfa8e6d1b22b338aa10fc

SHA256
5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073

SHA512
78b0b893295e5c8c811618638bfb9fcca2daef20b209ef4f0aeb400372b9827ff8b01325427ee41091dfb9d6b3c334510a6f2b4cccf407970cf72adb0bb2b293

Download Submit
memory/1556-25-0x0000000140000000-0x00000001405E8000-memory.dmp

Filesize
5.9MB

Download
memory/1556-24-0x0000000140000000-0x00000001405E8000-memory.dmp

Filesize
5.9MB

Download
memory/2120-7-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2120-1-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2120-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2120-12-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2120-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2136-0-0x00000000004D0000-0x0000000000562000-memory.dmp

Filesize
584KB

Download
memory/2136-4-0x00000000004D0000-0x0000000000562000-memory.dmp

Filesize
584KB

Download
memory/2136-6-0x0000000001DD0000-0x0000000001EEB000-memory.dmp

Filesize
1.1MB

Download
memory/2476-15-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/2476-14-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2476-19-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/2476-29-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/2496-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2496-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2496-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2496-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2496-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 2136 wrote to memory of 2120	2136	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2136 wrote to memory of 2120	2136	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2136 wrote to memory of 2120	2136	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2136 wrote to memory of 2120	2136	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2136 wrote to memory of 2120	2136	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2136 wrote to memory of 2120	2136	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2136 wrote to memory of 2120	2136	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2136 wrote to memory of 2120	2136	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2136 wrote to memory of 2120	2136	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2136 wrote to memory of 2120	2136	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2136 wrote to memory of 2120	2136	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2120 wrote to memory of 2624	2120	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	icacls.exe
PID 2120 wrote to memory of 2624	2120	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	icacls.exe
PID 2120 wrote to memory of 2624	2120	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	icacls.exe
PID 2120 wrote to memory of 2624	2120	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	icacls.exe
PID 2120 wrote to memory of 2476	2120	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2120 wrote to memory of 2476	2120	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2120 wrote to memory of 2476	2120	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2120 wrote to memory of 2476	2120	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2476 wrote to memory of 2496	2476	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2476 wrote to memory of 2496	2476	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2476 wrote to memory of 2496	2476	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2476 wrote to memory of 2496	2476	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2476 wrote to memory of 2496	2476	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2476 wrote to memory of 2496	2476	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2476 wrote to memory of 2496	2476	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2476 wrote to memory of 2496	2476	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2476 wrote to memory of 2496	2476	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2476 wrote to memory of 2496	2476	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe
PID 2476 wrote to memory of 2496	2476	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe	5e19952acedb1da68215069d44ce1f3d48da10491151003148f1cceab03f1073.exe