5fa9f0b2817cd7cbb7c8e2f73c1c26eb4267a004a1d394e52defb1a15b68b086

General

Target

2024-05-23_432555650bff65ebdddf98bd61355549_cryptolocker.exe
Size

78KB
MD5

432555650bff65ebdddf98bd61355549
SHA1

8fccf408ac99e38887dbe6d402eba588ee8b83d5
SHA256

5fa9f0b2817cd7cbb7c8e2f73c1c26eb4267a004a1d394e52defb1a15b68b086
SHA512

f23145857920fa41ba5b2781f267db6dad5d4ef6bfc68482c9ee4f3d065a27b13be6878b465dbe25c50ddf759cb4c4cf29271748f296a5de4f642f14e4108004
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdxPUxB1Z:T6a+rdOOtEvwDpjNtHPO

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2108-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2108-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2024-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2024-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2108-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2108-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2024-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2024-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2108-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2108-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2024-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2024-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2024 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_432555650bff65ebdddf98bd61355549_cryptolocker.exe

pid process

2108 2024-05-23_432555650bff65ebdddf98bd61355549_cryptolocker.exe

pid	process
2024	asih.exe

pid	process
2108	2024-05-23_432555650bff65ebdddf98bd61355549_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2108-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2108-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2024-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2024-26-0x0000000000500000-0x0000000000510000-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

Processes:

2024-05-23_432555650bff65ebdddf98bd61355549_cryptolocker.exe

description	pid	process	target process
PID 2108 wrote to memory of 2024	2108	2024-05-23_432555650bff65ebdddf98bd61355549_cryptolocker.exe	asih.exe
PID 2108 wrote to memory of 2024	2108	2024-05-23_432555650bff65ebdddf98bd61355549_cryptolocker.exe	asih.exe
PID 2108 wrote to memory of 2024	2108	2024-05-23_432555650bff65ebdddf98bd61355549_cryptolocker.exe	asih.exe
PID 2108 wrote to memory of 2024	2108	2024-05-23_432555650bff65ebdddf98bd61355549_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_432555650bff65ebdddf98bd61355549_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_432555650bff65ebdddf98bd61355549_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:2024

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
78KB

MD5
0c815625de7169459f446445b5890c1b

SHA1
b30e697eaf4cd1ae82e8191338c12209873be598

SHA256
68c705839de899906cdbcae7a1cf31406ad9c4015ffb1f935203e8ff12eff9bd

SHA512
19011e9b9d1f4a53c6e5cbfb3d80d4e9a372cd4d0456258c783647690322a97094044bdf5d173a1e1837c42474d53948dfe8fa075910fab32b7f941e665c5ca6

Download Submit
memory/2024-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2024-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2024-19-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/2024-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2108-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2108-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2108-9-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2108-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2108-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads