7c8b3eb322d37267f7decf820efa4a0316324c5ae65f1cb750680da85e77b41a

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
12-02-2024 17:42

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General

Target

2024-02-12_87edf0792c008aca8dba2811c94acdbc_cryptolocker.exe
Size

55KB
MD5

87edf0792c008aca8dba2811c94acdbc
SHA1

8bc48b35c12911c573908bb223c81294cbf5a629
SHA256

7c8b3eb322d37267f7decf820efa4a0316324c5ae65f1cb750680da85e77b41a
SHA512

5c9ba93ae58f43c71d443bb1179710a923a0abc2b91444efd0dbbb88881d30b7c55844420d3375a03dc2334157f2d85298e2294c05e38a61034497ba4f2ceb82
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61l:BbdDmjr+OtEvwDpjMz

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1780-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/1780-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2220-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2220-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1780-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2220-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2220-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1780-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/1780-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2220-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2220-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2220 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-02-12_87edf0792c008aca8dba2811c94acdbc_cryptolocker.exe

pid process

1780 2024-02-12_87edf0792c008aca8dba2811c94acdbc_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2220	asih.exe

pid	process
1780	2024-02-12_87edf0792c008aca8dba2811c94acdbc_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-02-12_87edf0792c008aca8dba2811c94acdbc_cryptolocker.exe

description	pid	process	target process
PID 1780 wrote to memory of 2220	1780	2024-02-12_87edf0792c008aca8dba2811c94acdbc_cryptolocker.exe	asih.exe
PID 1780 wrote to memory of 2220	1780	2024-02-12_87edf0792c008aca8dba2811c94acdbc_cryptolocker.exe	asih.exe
PID 1780 wrote to memory of 2220	1780	2024-02-12_87edf0792c008aca8dba2811c94acdbc_cryptolocker.exe	asih.exe
PID 1780 wrote to memory of 2220	1780	2024-02-12_87edf0792c008aca8dba2811c94acdbc_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_87edf0792c008aca8dba2811c94acdbc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_87edf0792c008aca8dba2811c94acdbc_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1780

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2220

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

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Downloads

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

Filesize
55KB

MD5
e427ce7847f8dddcf79cf2731482c1cc

SHA1
2be9959aeda0bd4a5cf833c0d6c800ceafbf7704

SHA256
325d9d9bb2e44e01b64701aa85dff85584d169974a073f8d76e7fca174f10218

SHA512
0773b669d0f54b88f9b68efe2f59fe7fe14b58cf2da64175578b32b104d4a349367bd360308739249fc2f410f4733e549f83fdcd0d50bf595fde36ee74fdcaf5

Download Submit
memory/1780-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1780-1-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/1780-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/1780-4-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/1780-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2220-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2220-23-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2220-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download