7f26de07176f6ab04a45252cc78849ed641dc15c91078fda7b00768b701262d8

Analysis

max time kernel
141s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2024, 01:28

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General

Target

2024-02-20_27f1144b13052c411fb61cc970376c3b_cryptolocker.exe
Size

41KB
MD5

27f1144b13052c411fb61cc970376c3b
SHA1

cd54c365c4c15a7caeb47bff8b020beea1729d4c
SHA256

7f26de07176f6ab04a45252cc78849ed641dc15c91078fda7b00768b701262d8
SHA512

bd961db74afce5e7adf07584c845b1f0aa772a84d7b6370fed96306f969985739efff65e6d37d789d9977488854c791004e1578848d8690a85075e8e7079c7cd
SSDEEP

384:e/4wODQkzonAYsju5N/surDQtOOtEvwDpjqIGROqS/Wcz0BVFHxzV:79inqyNR/QtOOtEvwDpjBKcmfxB

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/2968-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000023228-13.dat	CryptoLocker_rule2
behavioral2/memory/2968-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/2968-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0006000000023228-13.dat	CryptoLocker_set1
behavioral2/memory/2968-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

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-1-5-21-2398549320-3657759451-817663969-1000\Control Panel\International\Geo\Nation	2024-02-20_27f1144b13052c411fb61cc970376c3b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1824	asih.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 2968 wrote to memory of 1824	2968	2024-02-20_27f1144b13052c411fb61cc970376c3b_cryptolocker.exe	82
PID 2968 wrote to memory of 1824	2968	2024-02-20_27f1144b13052c411fb61cc970376c3b_cryptolocker.exe	82
PID 2968 wrote to memory of 1824	2968	2024-02-20_27f1144b13052c411fb61cc970376c3b_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-02-20_27f1144b13052c411fb61cc970376c3b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_27f1144b13052c411fb61cc970376c3b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2968
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1824

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\asih.exe

Filesize
41KB

MD5
8151b3e3a1c9c1918e54d17b02081fa7

SHA1
e8bcb25f41f3ddbec64db7f9c5e0400cd5e58840

SHA256
5e9d87fb6f259f0a8469130c7cdd7648c33ef4810f5fbfde1c47092ad4ae9ee0

SHA512
64b0c46faad794ac434737fb66f7304f632c73ba4fc7ec42c2803c632d20a18276d0bee2cfc950f51ac7a5e4a61bdc9398efbb35c452c90534b65b5aaa9a05da

Download Submit
memory/1824-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1824-22-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2968-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2968-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/2968-2-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/2968-3-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/2968-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download