75cd65af9f3cc05161873dec6a11fc1cbd8634557791c00b10574904f3dd94df

General

Target

2024-02-12_124cbbcfdc560a7ace800d2fb2d4c7ce_cryptolocker.exe
Size

126KB
MD5

124cbbcfdc560a7ace800d2fb2d4c7ce
SHA1

4134e845c0d9195858d4ea51e67731a0b39eb596
SHA256

75cd65af9f3cc05161873dec6a11fc1cbd8634557791c00b10574904f3dd94df
SHA512

5e8116c7eb4c3b93a0c0df83a84b252759ddb42d72cc63356ae8b992cab791d13f2b4b72e9668144406377d8c7f7fe824408f1b687506060b203307c0b691201
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp699GNtL1eInu:AnBdOOtEvwDpj6zX

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2932-1-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2932-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1140-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1140-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2932-1-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2932-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1140-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1140-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2932-1-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2932-14-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/1140-18-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/1140-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

1140 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-02-12_124cbbcfdc560a7ace800d2fb2d4c7ce_cryptolocker.exe

pid process

2932 2024-02-12_124cbbcfdc560a7ace800d2fb2d4c7ce_cryptolocker.exe

pid	process
1140	asih.exe

pid	process
2932	2024-02-12_124cbbcfdc560a7ace800d2fb2d4c7ce_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2932-1-0x0000000000500000-0x000000000050F000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2932-14-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/1140-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/1140-26-0x0000000000500000-0x000000000050F000-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

Processes:

2024-02-12_124cbbcfdc560a7ace800d2fb2d4c7ce_cryptolocker.exe

description	pid	process	target process
PID 2932 wrote to memory of 1140	2932	2024-02-12_124cbbcfdc560a7ace800d2fb2d4c7ce_cryptolocker.exe	asih.exe
PID 2932 wrote to memory of 1140	2932	2024-02-12_124cbbcfdc560a7ace800d2fb2d4c7ce_cryptolocker.exe	asih.exe
PID 2932 wrote to memory of 1140	2932	2024-02-12_124cbbcfdc560a7ace800d2fb2d4c7ce_cryptolocker.exe	asih.exe
PID 2932 wrote to memory of 1140	2932	2024-02-12_124cbbcfdc560a7ace800d2fb2d4c7ce_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_124cbbcfdc560a7ace800d2fb2d4c7ce_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_124cbbcfdc560a7ace800d2fb2d4c7ce_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2932

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:1140

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
126KB

MD5
8b8bb804bd91a40959efc18e11f518d9

SHA1
68760eb445900fe68d06f9116690fcc60a4e3f89

SHA256
cdf464bfe3a7d9c7f3d7a0cd6000108a195cecbae0081c101db142846588736c

SHA512
f217933d88be0465f7f064a24f885b559d0ff491d510119e3114c660b1425d299a20c4b4c94b23ffc2d43eb9f1ebb240701334645edc1b7d03668d72fb024efa

Download Submit
memory/1140-19-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/1140-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1140-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2932-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2932-1-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2932-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2932-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2932-14-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2932-16-0x0000000001C80000-0x0000000001C8F000-memory.dmp

Filesize
60KB

Download
memory/2932-28-0x0000000001C80000-0x0000000001C8F000-memory.dmp

Filesize
60KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads