fa704c9bada6d3e06ce81c0cbe510dd1f3fece3fc86ef101e96b103da7aaf303

General

Target

2024-02-12_d6aff43dc4232ab2ae38f02936923527_cryptolocker.exe
Size

63KB
MD5

d6aff43dc4232ab2ae38f02936923527
SHA1

bf4d6d100037114e70b6f9b2657b297ad2ece4dc
SHA256

fa704c9bada6d3e06ce81c0cbe510dd1f3fece3fc86ef101e96b103da7aaf303
SHA512

53149379753dbbcd8cc170ce2b250e122bfb243070a6890a43c9f066b95d5e241c2dbabf11be62cf3da5f359e53eecbcc174c454c3197bc8b8519afae560e819
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYhP+K:1nK6a+qdOOtEvwDpjs

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2028-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2028-15-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2916-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2916-28-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2028-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2028-15-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2916-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2916-28-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2028-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2028-15-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2916-17-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2916-28-0x0000000000500000-0x000000000050F311-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2916 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-02-12_d6aff43dc4232ab2ae38f02936923527_cryptolocker.exe

pid process

2028 2024-02-12_d6aff43dc4232ab2ae38f02936923527_cryptolocker.exe

pid	process
2916	asih.exe

pid	process
2028	2024-02-12_d6aff43dc4232ab2ae38f02936923527_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2028-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2028-15-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2916-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2916-28-0x0000000000500000-0x000000000050F311-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_d6aff43dc4232ab2ae38f02936923527_cryptolocker.exe

description	pid	process	target process
PID 2028 wrote to memory of 2916	2028	2024-02-12_d6aff43dc4232ab2ae38f02936923527_cryptolocker.exe	asih.exe
PID 2028 wrote to memory of 2916	2028	2024-02-12_d6aff43dc4232ab2ae38f02936923527_cryptolocker.exe	asih.exe
PID 2028 wrote to memory of 2916	2028	2024-02-12_d6aff43dc4232ab2ae38f02936923527_cryptolocker.exe	asih.exe
PID 2028 wrote to memory of 2916	2028	2024-02-12_d6aff43dc4232ab2ae38f02936923527_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_d6aff43dc4232ab2ae38f02936923527_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_d6aff43dc4232ab2ae38f02936923527_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2028

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2916

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
63KB

MD5
b62031a0d3d3faee3fd624fbda53d687

SHA1
34941a8f85123e6bb050ce1d63a25b98c130315c

SHA256
d5df2aa494948e916ea23b360400c4e70cc2bad8aadaf965f0d93a9d008f4506

SHA512
6db38d779619973384dff845fd0993d2e93f281ce67bef5b085aee64a0a82295ca76670c13b15dd781b9a4c87cb825348fd4b3329712e1ec8aeb25286777ee1c

Download Submit
memory/2028-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2028-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2028-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2028-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2028-15-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2028-16-0x00000000006A0000-0x00000000006B0000-memory.dmp

Filesize
64KB

Download
memory/2028-27-0x00000000006A0000-0x00000000006B0000-memory.dmp

Filesize
64KB

Download
memory/2916-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2916-26-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2916-19-0x0000000000210000-0x0000000000216000-memory.dmp

Filesize
24KB

Download
memory/2916-28-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads