6adb092e6634057f0d0ac60eb42d6f65a7fa939451f0810bea0ec0519e601b83

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12/02/2024, 05:44

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General

Target

2024-02-12_663ece3fb9dd1f42bf7c43552bacc260_cryptolocker.exe
Size

29KB
MD5

663ece3fb9dd1f42bf7c43552bacc260
SHA1

c9b9f1434b3c290726f4012ee4be4e911bf22029
SHA256

6adb092e6634057f0d0ac60eb42d6f65a7fa939451f0810bea0ec0519e601b83
SHA512

5c9921d7711eb6a458e6e8af0c2b693a3aaaf40aeae8f4b1ea34697d426ba11f954cdd67823674976beea9c1ec11f6e7704615382c3cfca6cf00353495dcb4b2
SSDEEP

768:q0ZziOWwULueOSdE8tOOtEvwDpjeWaJIO/xOch:q0zizzOSxMOtEvwDpj/arMQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1608-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023222-13.dat	CryptoLocker_rule2
behavioral2/memory/1608-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1468-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/1608-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1468-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1608-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0007000000023222-13.dat	UPX
behavioral2/memory/1608-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1468-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	2024-02-12_663ece3fb9dd1f42bf7c43552bacc260_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1468	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 1608 wrote to memory of 1468	1608	2024-02-12_663ece3fb9dd1f42bf7c43552bacc260_cryptolocker.exe	84
PID 1608 wrote to memory of 1468	1608	2024-02-12_663ece3fb9dd1f42bf7c43552bacc260_cryptolocker.exe	84
PID 1608 wrote to memory of 1468	1608	2024-02-12_663ece3fb9dd1f42bf7c43552bacc260_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-12_663ece3fb9dd1f42bf7c43552bacc260_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_663ece3fb9dd1f42bf7c43552bacc260_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1608
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1468

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
29KB

MD5
e5d3de8489d85185d6d042bf76e42eac

SHA1
b96df18f2bf2909c1defbcd0f0729c0ce455fd8d

SHA256
51b74b8955bd7b153a098a716d3205715279f346aad01cd9f5c0290e1479c25c

SHA512
f0221e6efaad467fdf3d3f08bc4aab4db2e4026690f41816aaf1e2f84f3032629a6c71d90d87519a550ad03a71e6e5653724fd1a8087ff1ab459b2b968374f95

Download Submit
memory/1468-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1468-24-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1468-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1608-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1608-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1608-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1608-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1608-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download