05ddfe9cf686a3b55f39a16c16c59a61dc129b5e7ac1fe51fe80483bf9493110

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/03/2024, 05:43

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General

Target

2024-03-06_3a22ffd192efe0cb5e9a604057354d92_cryptolocker.exe
Size

39KB
MD5

3a22ffd192efe0cb5e9a604057354d92
SHA1

57e76774aec6a9b135e0962af20d05d6f8153361
SHA256

05ddfe9cf686a3b55f39a16c16c59a61dc129b5e7ac1fe51fe80483bf9493110
SHA512

9f46b3119ad74037848efe510a765623b991633768f1df89b22101bdfd1307db0f5ca87a184c4aa2ecc140e72b1cf109edb75f4bf0766af2705bdd20cf074e39
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkL7vH:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLL

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2112-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000001ebc7-13.dat	CryptoLocker_rule2
behavioral2/memory/3500-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2112-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2112-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000001ebc7-13.dat	CryptoLocker_set1
behavioral2/memory/3500-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2112-18-0x0000000000500000-0x000000000050B000-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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-03-06_3a22ffd192efe0cb5e9a604057354d92_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3500	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 2112 wrote to memory of 3500	2112	2024-03-06_3a22ffd192efe0cb5e9a604057354d92_cryptolocker.exe	89
PID 2112 wrote to memory of 3500	2112	2024-03-06_3a22ffd192efe0cb5e9a604057354d92_cryptolocker.exe	89
PID 2112 wrote to memory of 3500	2112	2024-03-06_3a22ffd192efe0cb5e9a604057354d92_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-06_3a22ffd192efe0cb5e9a604057354d92_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_3a22ffd192efe0cb5e9a604057354d92_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3500

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
39KB

MD5
f4989384ce667e99d2ed3c081118cfe1

SHA1
ef9f5c3d86f92fac7ef6adc0656573bb911d59ad

SHA256
9bd39ee9d3626ee612579d93b5c40de8ca6c469519a7041d592021afafb83a28

SHA512
2af5d9f805ac7cda0dafe76c8aaea44883b62f6ce4c72c93496b8a747b6aaa9cb590ce492e41582ed02b3eebcfd665f2445b8cb13c118ea642dd13cc9dfdf9ab

Download Submit
memory/2112-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2112-1-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/2112-3-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2112-2-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/2112-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3500-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3500-22-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/3500-20-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download