32edea67968b4fd0724af3b0f7d5e9868f95f599c2f475a2286e061d0d5b356d

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
21-05-2024 15:45

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General

Target

2024-05-21_cabe62ab2393fda48934d7cec2140237_cryptolocker.exe
Size

95KB
MD5

cabe62ab2393fda48934d7cec2140237
SHA1

4cbf116ff2dba1822bf88a63a0732d6c4763f7af
SHA256

32edea67968b4fd0724af3b0f7d5e9868f95f599c2f475a2286e061d0d5b356d
SHA512

eb683813011774fab848fe4d1e11da25241833531dbd3ba2f1957987d2587cd68f02a717adf1c6984710c06a28cae3a8d3613e35eb467f8ec6625ee7e81aabe2
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp0+f:AnBdOOtEvwDpj6z8

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2916-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/2916-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1208-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1208-28-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2916-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/2916-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1208-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1208-28-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2916-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
C:\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral2/memory/2916-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/1208-19-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/1208-28-0x0000000000500000-0x000000000050F000-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

Processes:

2024-05-21_cabe62ab2393fda48934d7cec2140237_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-05-21_cabe62ab2393fda48934d7cec2140237_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

1208 asih.exe

pid	process
1208	asih.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/2916-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral2/memory/2916-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1208-19-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1208-28-0x0000000000500000-0x000000000050F000-memory.dmp	upx

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

Processes:

2024-05-21_cabe62ab2393fda48934d7cec2140237_cryptolocker.exe

description	pid	process	target process
PID 2916 wrote to memory of 1208	2916	2024-05-21_cabe62ab2393fda48934d7cec2140237_cryptolocker.exe	asih.exe
PID 2916 wrote to memory of 1208	2916	2024-05-21_cabe62ab2393fda48934d7cec2140237_cryptolocker.exe	asih.exe
PID 2916 wrote to memory of 1208	2916	2024-05-21_cabe62ab2393fda48934d7cec2140237_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_cabe62ab2393fda48934d7cec2140237_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_cabe62ab2393fda48934d7cec2140237_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2916

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:1208

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
95KB

MD5
2c69b42b3d538a11dda0d919103d6941

SHA1
290612b9268708579af5db24e49429130d4ae2e6

SHA256
eea6e56a2670a9b066c8e92d73108f433301bcae6120a0c99b3764e0b03d9e10

SHA512
906540894365e1f047e9f8739cb3a2502b2d080968ae71ab0c7de1d47dabfa728f041d01eb2333991c5326a3485dffae25420b51a70c0524797c3c42606c11c5

Download Submit
memory/1208-19-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1208-21-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/1208-27-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1208-28-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2916-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2916-5-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2916-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/2916-9-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/2916-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download