ed9579f8efbf2f6555a486942c1ba12643f657f5dd8a7a65cd0bd86844eb7d2e

Analysis

max time kernel
141s
max time network
143s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22/02/2024, 12:56

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General

Target

2024-02-22_ad88416b901ac3b3426d6a3d0ac64be4_cryptolocker.exe
Size

55KB
MD5

ad88416b901ac3b3426d6a3d0ac64be4
SHA1

8a259c8a08db736b0afe48e3e0ae8a58ebb16488
SHA256

ed9579f8efbf2f6555a486942c1ba12643f657f5dd8a7a65cd0bd86844eb7d2e
SHA512

b3fc7edbec78844a5826ee1faa5607fe173cfe6e6527146b6f5b3a838b8f3094e4fcd144cd49818c998c57f93f6b69c8651fb193612e40c678511450065e6e09
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61b:BbdDmjr+OtEvwDpjMd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2336-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000900000001224c-11.dat	CryptoLocker_rule2
behavioral1/memory/2336-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2368-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2368-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2336-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2336-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2368-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2368-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2336-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000900000001224c-11.dat	UPX
behavioral1/memory/2336-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2368-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2368-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2368	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2336	2024-02-22_ad88416b901ac3b3426d6a3d0ac64be4_cryptolocker.exe

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

description	pid	Process	procid_target
PID 2336 wrote to memory of 2368	2336	2024-02-22_ad88416b901ac3b3426d6a3d0ac64be4_cryptolocker.exe	30
PID 2336 wrote to memory of 2368	2336	2024-02-22_ad88416b901ac3b3426d6a3d0ac64be4_cryptolocker.exe	30
PID 2336 wrote to memory of 2368	2336	2024-02-22_ad88416b901ac3b3426d6a3d0ac64be4_cryptolocker.exe	30
PID 2336 wrote to memory of 2368	2336	2024-02-22_ad88416b901ac3b3426d6a3d0ac64be4_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-02-22_ad88416b901ac3b3426d6a3d0ac64be4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_ad88416b901ac3b3426d6a3d0ac64be4_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2336
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2368

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

Replay Monitor

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Downloads

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

Filesize
55KB

MD5
db4dcc5f87b00d20bd4621927fc1da47

SHA1
e3c3377a999f43afc57ffc10a44f867fcc184263

SHA256
856c32723265153c630f7c5a5cb806d8454af6159e8af23dbb7d34a3c0953d83

SHA512
ae17f133796a5bbacd4574d5c5ebac0c53929459725851f1c39f42ab92c65825c6e3261c5ac4d8d68ebc43df4f9e1f8f3a6e144ef48171dab4891ee13fae4d1a

Download Submit
memory/2336-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2336-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2336-3-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2336-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2336-13-0x0000000002060000-0x0000000002070000-memory.dmp

Filesize
64KB

Download
memory/2336-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2368-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2368-19-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/2368-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download