5a0e82a48f1b99e071672a54fdc682b15d68a1f0ca5f2c26d40fa059b2ceacf0

Analysis

max time kernel
150s
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 19:24

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General

Target

2024-02-12_5d137527c0ba13d90f13544a9435d752_cryptolocker.exe
Size

38KB
MD5

5d137527c0ba13d90f13544a9435d752
SHA1

3560ad201fe10805258769618151973720c32feb
SHA256

5a0e82a48f1b99e071672a54fdc682b15d68a1f0ca5f2c26d40fa059b2ceacf0
SHA512

9d1999240224e2e099850ebd0ac94a99f82e740576d87b469452109435f6c9bd22128eca93b4df220ff785780c1ab683ce3e9715c1badc36e9ab135fd491d389
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKcf1Y:X6QFElP6n+gJQMOtEvwDpjBsYK6m

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	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

Processes:

2024-02-12_5d137527c0ba13d90f13544a9435d752_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	2024-02-12_5d137527c0ba13d90f13544a9435d752_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3640 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3640	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_5d137527c0ba13d90f13544a9435d752_cryptolocker.exe

description	pid	process	target process
PID 644 wrote to memory of 3640	644	2024-02-12_5d137527c0ba13d90f13544a9435d752_cryptolocker.exe	asih.exe
PID 644 wrote to memory of 3640	644	2024-02-12_5d137527c0ba13d90f13544a9435d752_cryptolocker.exe	asih.exe
PID 644 wrote to memory of 3640	644	2024-02-12_5d137527c0ba13d90f13544a9435d752_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_5d137527c0ba13d90f13544a9435d752_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_5d137527c0ba13d90f13544a9435d752_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:644

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:3640

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
38KB

MD5
80cb4ab61210a16fa81c59065fea6e77

SHA1
0cd661b90a01fbedb329864d175a6228e3b8e0f3

SHA256
19b7ab244a2535c146aaca5cd4c270a53153c944aeaf68dbf71671b3c3e1627c

SHA512
dabf687e678e45ff613683ad7925d090ae4864995420e56398d259b7eb5c3e1e9d8429b6268f0c7d3c88a80cfa4a4e009bde477ecca47bd2651665d41dada884

Download Submit
memory/644-0-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/644-1-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/644-2-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3640-17-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/3640-20-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download