fb5d1c6816287a6ad8547883f2cc2978847050c3f8ac1eb310bd914df04c6237

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
19/03/2024, 01:01

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General

Target

2024-03-19_ad7a8378d771dbbc1399ca45a7b4dbfc_cryptolocker.exe
Size

62KB
MD5

ad7a8378d771dbbc1399ca45a7b4dbfc
SHA1

c822730d8ed4bee95c5b8ce03b670f3efc808b6d
SHA256

fb5d1c6816287a6ad8547883f2cc2978847050c3f8ac1eb310bd914df04c6237
SHA512

8166254fe49572bb2c1b4430273094e67a3ca4724d8edbfcc879426de2833a54a0e558c004a62cf29041d7dba25662c6f49d8e8256f6124448e226dfeca28d84
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtstoq:BbdDmjr+OtEvwDpjM8T

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1556-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012248-11.dat	CryptoLocker_rule2
behavioral1/memory/1556-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3060-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3060-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/1556-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3060-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3060-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1556-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b000000012248-11.dat	UPX
behavioral1/memory/1556-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3060-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3060-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3060	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1556	2024-03-19_ad7a8378d771dbbc1399ca45a7b4dbfc_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 1556 wrote to memory of 3060	1556	2024-03-19_ad7a8378d771dbbc1399ca45a7b4dbfc_cryptolocker.exe	28
PID 1556 wrote to memory of 3060	1556	2024-03-19_ad7a8378d771dbbc1399ca45a7b4dbfc_cryptolocker.exe	28
PID 1556 wrote to memory of 3060	1556	2024-03-19_ad7a8378d771dbbc1399ca45a7b4dbfc_cryptolocker.exe	28
PID 1556 wrote to memory of 3060	1556	2024-03-19_ad7a8378d771dbbc1399ca45a7b4dbfc_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-19_ad7a8378d771dbbc1399ca45a7b4dbfc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-19_ad7a8378d771dbbc1399ca45a7b4dbfc_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1556
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3060

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
62KB

MD5
2f1bdd87b442c568ffe4aab1774db9ae

SHA1
a6fc7430096f142643932e7eda3e562aebffe4db

SHA256
0ac14596471d7fa0a72f3e60d5ed311607d0c8f64f3db5e6b70c50addaac14b5

SHA512
d812ce6bc11241af4b9b01d1e7e06c9702e2b45f1c9b91e1ee289a037263a7e8566992f85764d0e5c1527b15664bee48c2ac3aaa1df74c1472d76b27e9d1e544

Download Submit
memory/1556-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1556-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1556-2-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/1556-4-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1556-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3060-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3060-18-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/3060-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3060-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download