16eee3899c510782cdd15fa53f01826215fff5fe59c1a4487ef89f404e138261

General

Target

2024-02-12_9232208734006b701b8cd0510c4b0e59_cryptolocker.exe
Size

75KB
MD5

9232208734006b701b8cd0510c4b0e59
SHA1

519c52d23625708e9ee13517789b311af23fa881
SHA256

16eee3899c510782cdd15fa53f01826215fff5fe59c1a4487ef89f404e138261
SHA512

07fe990c606528b7995735f2e1355eeb1bfc5a5e9b215dd95f2309abec8c79a8fee0b58a96a04f5b4dfbdc4c4902401dfd9ed83c46385120cf39993ac67a889d
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdWnO:T6a+rdOOtEvwDpjNtv

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2644-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2704-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2644-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2704-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2644-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2704-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2644-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2704-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2644-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2704-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2644-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2704-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2704 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-02-12_9232208734006b701b8cd0510c4b0e59_cryptolocker.exe

pid process

2644 2024-02-12_9232208734006b701b8cd0510c4b0e59_cryptolocker.exe

pid	process
2704	asih.exe

pid	process
2644	2024-02-12_9232208734006b701b8cd0510c4b0e59_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2644-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2704-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2644-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2704-27-0x0000000000500000-0x0000000000510000-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:

2024-02-12_9232208734006b701b8cd0510c4b0e59_cryptolocker.exe

description	pid	process	target process
PID 2644 wrote to memory of 2704	2644	2024-02-12_9232208734006b701b8cd0510c4b0e59_cryptolocker.exe	asih.exe
PID 2644 wrote to memory of 2704	2644	2024-02-12_9232208734006b701b8cd0510c4b0e59_cryptolocker.exe	asih.exe
PID 2644 wrote to memory of 2704	2644	2024-02-12_9232208734006b701b8cd0510c4b0e59_cryptolocker.exe	asih.exe
PID 2644 wrote to memory of 2704	2644	2024-02-12_9232208734006b701b8cd0510c4b0e59_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_9232208734006b701b8cd0510c4b0e59_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_9232208734006b701b8cd0510c4b0e59_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2644

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2704

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
75KB

MD5
dcd5d2c8b8bbe0d8dc7bdb61d228f406

SHA1
3bbf353b4ac3d25b52cfb0e5b68861f59cdd9f43

SHA256
7b45b11836e5eb01932704e85340ce594d4e4288d2a6c6ccc8e57e579d4674b7

SHA512
cc69bcadc3ab07a8c50aa14e512478f006ba30c4b4e5d1326c3de2c8e21d01e219e2f0106affa4512128c378b675e87a57eefdfbafc3281aa059c237591ea3d2

Download Submit
memory/2644-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2644-1-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2644-2-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2644-9-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2644-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2644-14-0x00000000025C0000-0x00000000025D0000-memory.dmp

Filesize
64KB

Download
memory/2704-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2704-19-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2704-20-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2704-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads