106340db2b8be18918b522dc409597088c5e242fe42687a949bf3cc2c946dae1

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
13/05/2024, 21:32

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General

Target

2024-05-13_9348cf024e679e7095562bebf4e829a8_cryptolocker.exe
Size

96KB
MD5

9348cf024e679e7095562bebf4e829a8
SHA1

a83a748003a3e7f17c5464b97d1fa1d35d0c0159
SHA256

106340db2b8be18918b522dc409597088c5e242fe42687a949bf3cc2c946dae1
SHA512

b3a450efd0d2820d9421c6a788fae7e32cd8f30561a6d33051b680b0acce2097a06941898ad0e903c0f322d96c0ebb4c970014eee98479e48e1e1a5a638e79d1
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwMgm:V6a+pOtEvwDpjtzi

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023288-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023288-12.dat	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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-05-13_9348cf024e679e7095562bebf4e829a8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4624	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 2616 wrote to memory of 4624	2616	2024-05-13_9348cf024e679e7095562bebf4e829a8_cryptolocker.exe	82
PID 2616 wrote to memory of 4624	2616	2024-05-13_9348cf024e679e7095562bebf4e829a8_cryptolocker.exe	82
PID 2616 wrote to memory of 4624	2616	2024-05-13_9348cf024e679e7095562bebf4e829a8_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-13_9348cf024e679e7095562bebf4e829a8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-13_9348cf024e679e7095562bebf4e829a8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2616
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4624

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
96KB

MD5
809a00a5d663e0dfbbc6fd7310861a2b

SHA1
813c4cdda07b100f1756d13a1d47279af782d4eb

SHA256
a050993b62bff05dc1ca444894f3dd062b0c84789055f34241aa30ebc60c25f2

SHA512
5533473a216ebab8751d2c6acfec13ec6ba790b9724e184a8ce9a13991faa1aa6e35246bcfc22c9bdf3567c1dc341ca879e61e7dab7392dd59a81e02a40992c3

Download Submit
memory/2616-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2616-1-0x00000000007E0000-0x00000000007E6000-memory.dmp

Filesize
24KB

Download
memory/2616-8-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4624-19-0x0000000002000000-0x0000000002006000-memory.dmp

Filesize
24KB

Download
memory/4624-23-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download