dee29fc2ac6a3714f9191342d03770154bbcaeb872a2e67c0b253fccb290dc3d

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
29/01/2024, 04:31

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General

Target

2024-01-29_55f1ab83a1a25b49f8928190cc67d2ed_cryptolocker.exe
Size

36KB
MD5

55f1ab83a1a25b49f8928190cc67d2ed
SHA1

5dd1d93eb355d4e91ad07ffc56d459bbdbd85a88
SHA256

dee29fc2ac6a3714f9191342d03770154bbcaeb872a2e67c0b253fccb290dc3d
SHA512

d4ab253bd7bb66f6ae6d31907566437efeea6508578c75084b775cd74505f07f8a57f46437ba52666a59b1a72a28232616ecc86dc29deff0e4a31b9c4c68c62f
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen7JEgx3r:bxNrC7kYo1Fxf3s06g9

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f0-12.dat	CryptoLocker_rule2

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-01-29_55f1ab83a1a25b49f8928190cc67d2ed_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1112	pissa.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3472 wrote to memory of 1112	3472	2024-01-29_55f1ab83a1a25b49f8928190cc67d2ed_cryptolocker.exe	66
PID 3472 wrote to memory of 1112	3472	2024-01-29_55f1ab83a1a25b49f8928190cc67d2ed_cryptolocker.exe	66
PID 3472 wrote to memory of 1112	3472	2024-01-29_55f1ab83a1a25b49f8928190cc67d2ed_cryptolocker.exe	66

C:\Users\Admin\AppData\Local\Temp\2024-01-29_55f1ab83a1a25b49f8928190cc67d2ed_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-29_55f1ab83a1a25b49f8928190cc67d2ed_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3472
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Executes dropped EXE
  PID:1112

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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\Temp\pissa.exe

Filesize
36KB

MD5
a387bfdf4cdfb71c1aa7dce76e06f584

SHA1
cab5231b05a3e5278335691039c3f2ab9d14f30c

SHA256
92f06bbbfdbd365d28aaab55802ac7b2b85a94735fccb930f104e724d5f4e5e0

SHA512
dea1ced70be139e6cf69659fac895e6c7fa17b5f0d65fbf533e9b2ecd8c7a1ded791d0f7cd352b44ddab5977e6c1983d6f2c0d934dc6870434b10a65173c0230

Download Submit
memory/1112-17-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/1112-23-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/3472-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3472-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3472-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download