f34c13a2a6f92947c93dd3015c702862d7fc5d74d7791d0250eabdd85fc81aad

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
02/06/2024, 04:38

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General

Target

2024-06-02_958da012bd185b5676faec41cc41fdb9_cryptolocker.exe
Size

88KB
MD5

958da012bd185b5676faec41cc41fdb9
SHA1

a879dd6a1c93418081a530b06599041d7b89f287
SHA256

f34c13a2a6f92947c93dd3015c702862d7fc5d74d7791d0250eabdd85fc81aad
SHA512

bb9fe6fe574a8209f231510f0b1a67efe271f8912b68a5302dc1f5b84b7161a4dd134311f98330fcebd512c404793e493c1a768b17ead2d83110da4d3f2324dc
SSDEEP

768:qkmnjFom/kLyMro2GtOOtEvwDpjeY10Y/YMsvlMdwPK80GQuchoIgtIODZ:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgX

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2108-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d00000001226c-11.dat	CryptoLocker_rule2
behavioral1/memory/2480-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2108-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2480-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2108-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d00000001226c-11.dat	CryptoLocker_set1
behavioral1/memory/2480-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2108-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2480-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2108-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000d00000001226c-11.dat	UPX
behavioral1/memory/2480-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2108-16-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2480-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2480	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2108	2024-06-02_958da012bd185b5676faec41cc41fdb9_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2108-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000d00000001226c-11.dat	upx
behavioral1/memory/2480-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2108-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2480-26-0x0000000000500000-0x000000000050F000-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 4 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 2480	2108	2024-06-02_958da012bd185b5676faec41cc41fdb9_cryptolocker.exe	28
PID 2108 wrote to memory of 2480	2108	2024-06-02_958da012bd185b5676faec41cc41fdb9_cryptolocker.exe	28
PID 2108 wrote to memory of 2480	2108	2024-06-02_958da012bd185b5676faec41cc41fdb9_cryptolocker.exe	28
PID 2108 wrote to memory of 2480	2108	2024-06-02_958da012bd185b5676faec41cc41fdb9_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-02_958da012bd185b5676faec41cc41fdb9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_958da012bd185b5676faec41cc41fdb9_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2480

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
89KB

MD5
8ec079d9d3a8e1ed067ee9de407013b5

SHA1
dcc871dd4cb3ce9bcd3ac698d59de4e6dd0cf4d2

SHA256
91267f60f3961e670bfee6a2f5707eba404e45f8863245e96ab6f5f3b06baee8

SHA512
4ef2ec2739fa2dbc5324d84c2c7ecfe4829023d95ae3290613ec04811c5b62bd2bf08d5861aa659c75efc5acb67c38f9cda60c0b431199953e08735745852a9e

Download Submit
memory/2108-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2108-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2108-2-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2108-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2108-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2480-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2480-19-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2480-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download