a2ac38cbf80ff908a07342ceeb7361ee80242451367d75689ec1a98facdb9da7

Analysis

max time kernel
145s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
03/02/2024, 07:32

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General

Target

2024-02-03_894c20d5ac0dbd5415856315f153245d_cryptolocker.exe
Size

119KB
MD5

894c20d5ac0dbd5415856315f153245d
SHA1

a8802f9fb0cc782bccdeae235fff0468c80ae415
SHA256

a2ac38cbf80ff908a07342ceeb7361ee80242451367d75689ec1a98facdb9da7
SHA512

7afbec3633400bec690bb9df56b076eaad3596d7d7b7e5003698c9c322853d3bc0024169d48f5713a4a4e480684987390c397ac6c3ff77e9de1e261cb2077b3f
SSDEEP

768:gUQz7yVEhs9+4T/1bytOOtEvwDpjNbZ7uyA36S7MpxRIIXVe3mU9TYwlOBT+:gUj+AIMOtEvwDpjNbwQEIPlemUhYO

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002320a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002320a-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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-03_894c20d5ac0dbd5415856315f153245d_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
3276	misid.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 5012 wrote to memory of 3276	5012	2024-02-03_894c20d5ac0dbd5415856315f153245d_cryptolocker.exe	86
PID 5012 wrote to memory of 3276	5012	2024-02-03_894c20d5ac0dbd5415856315f153245d_cryptolocker.exe	86
PID 5012 wrote to memory of 3276	5012	2024-02-03_894c20d5ac0dbd5415856315f153245d_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-03_894c20d5ac0dbd5415856315f153245d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_894c20d5ac0dbd5415856315f153245d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5012
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:3276

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\misid.exe

Filesize
119KB

MD5
92902173161bb26a34bb81b7ad147d99

SHA1
f82e259d6347ed85bc03fda6fc84da720a5f8247

SHA256
51bbbb0fcfe940cbea1044256d331a0e360cc544133db09a9f128d8b2cc3dddc

SHA512
d38aa038b7e35567c06d672ab734edc544e237b364c77ff1b04f1e1a9ab059c02e204d6f71009e97df1332e4af75b3dd95bef1763e27d7851a0b1b50b7ed6da2

Download Submit
memory/3276-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/3276-20-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/5012-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/5012-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/5012-2-0x0000000000550000-0x0000000000556000-memory.dmp

Filesize
24KB

Download