e9845c7532c4d9ae62949841b8bb788f8a9920094a7cab6dc8ea3e29bd803569

Analysis

max time kernel
149s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 01:25

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General

Target

2024-05-23_58828dae94d22fd7fe3701f7fa02c1d6_cryptolocker.exe
Size

47KB
MD5

58828dae94d22fd7fe3701f7fa02c1d6
SHA1

2e6851ee0a8736f6a1401cea6221e92a22168711
SHA256

e9845c7532c4d9ae62949841b8bb788f8a9920094a7cab6dc8ea3e29bd803569
SHA512

2013b2d955e4b01db61c2f0f8e7c18c7784e827622a4cb9d4c4d2fb6e7ea750ee120be5c6c24b77330c60ac38392a5117e7ca40b16e38c5e876dec0e85af594c
SSDEEP

384:e/4wODQkzonAYsju5N/surDQtOOtEvwDpjqIGROqS/WccJVJwi2B5oCCM8CLW2Vw:79inqyNR/QtOOtEvwDpjBKccJVODvy3x

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4200-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/4200-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2700-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4200-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/4200-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2700-17-0x0000000000500000-0x000000000050F000-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

Processes:

2024-05-23_58828dae94d22fd7fe3701f7fa02c1d6_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-23_58828dae94d22fd7fe3701f7fa02c1d6_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2700 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2700	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_58828dae94d22fd7fe3701f7fa02c1d6_cryptolocker.exe

description	pid	process	target process
PID 4200 wrote to memory of 2700	4200	2024-05-23_58828dae94d22fd7fe3701f7fa02c1d6_cryptolocker.exe	asih.exe
PID 4200 wrote to memory of 2700	4200	2024-05-23_58828dae94d22fd7fe3701f7fa02c1d6_cryptolocker.exe	asih.exe
PID 4200 wrote to memory of 2700	4200	2024-05-23_58828dae94d22fd7fe3701f7fa02c1d6_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_58828dae94d22fd7fe3701f7fa02c1d6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_58828dae94d22fd7fe3701f7fa02c1d6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4200

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2700

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
47KB

MD5
00892ba3d378a025e793ae44d4f94cde

SHA1
21d694d56f5c06bc010fe733e3856ac8c2991015

SHA256
4bdee2b5f4df46e1afd6b216afdd7a5f573e50fae5f6b4d2620448839364d3b1

SHA512
6aa8d644c73df03891a66564af8f2163fd4c04808a8071e539b4da0286db7c5bb2798593fedf01ac961976cde6cf4f0f8a973777689189baa22efb68c8c4eab4

Download Submit
memory/2700-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2700-20-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/2700-26-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4200-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4200-1-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/4200-2-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/4200-9-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/4200-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download