e69853ca4953619f00731e020e46826a5a9830d971b0a2dda2f836222c0e8d37

Analysis

max time kernel
112s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
24/01/2024, 12:36

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General

Target

2024-01-24_dea013c6fcf1c0fa4ff3ec6154612e25_cryptolocker.exe
Size

43KB
MD5

dea013c6fcf1c0fa4ff3ec6154612e25
SHA1

c66ce2751fec0488a9dfd066547dd8c0fbc3613d
SHA256

e69853ca4953619f00731e020e46826a5a9830d971b0a2dda2f836222c0e8d37
SHA512

d62f8bab5c27f3fc53913714c3e46a09ff7cfa9c70ba1d1b12ea88563f045abf5e3aff71fa7d9174ca4bf94e7df88742720961c92df1edd97c821c80cccb34a8
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxG:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XL

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023172-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023172-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-01-24_dea013c6fcf1c0fa4ff3ec6154612e25_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4548	hurok.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 2116 wrote to memory of 4548	2116	2024-01-24_dea013c6fcf1c0fa4ff3ec6154612e25_cryptolocker.exe	88
PID 2116 wrote to memory of 4548	2116	2024-01-24_dea013c6fcf1c0fa4ff3ec6154612e25_cryptolocker.exe	88
PID 2116 wrote to memory of 4548	2116	2024-01-24_dea013c6fcf1c0fa4ff3ec6154612e25_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-24_dea013c6fcf1c0fa4ff3ec6154612e25_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-24_dea013c6fcf1c0fa4ff3ec6154612e25_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2116
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:4548

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\hurok.exe

Filesize
43KB

MD5
b4de86a9fd9a3dcfd4840147c6a0b9f5

SHA1
bc7ac0be669d6de26a23f1064d688cdd62611fcb

SHA256
6a3b92fb7f3aa9fc76538c9af3a5002882c49b8c216ccf8b0b2f6354a10b8f0e

SHA512
2992470b85c6005bece14bc5ba335bf001528ae0ea97d708c1f746322926a1857e6603360d06173911ac2eeb68bdf8cd3f4b8fc1ad3e1388fa4523cfb06cfedb

Download Submit
memory/2116-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2116-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2116-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4548-23-0x0000000001F40000-0x0000000001F46000-memory.dmp

Filesize
24KB

Download