5e421acdfd15421fa19d0fd141505d4a112dfe6ca5bc157b9bb602db592ec3a3

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
27-04-2024 09:30

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General

Target

2024-04-27_7bcf79df4d729fd2df6527868ed839d8_cryptolocker.exe
Size

63KB
MD5

7bcf79df4d729fd2df6527868ed839d8
SHA1

07826503c1540022913f587b03a2bcc5feff46e2
SHA256

5e421acdfd15421fa19d0fd141505d4a112dfe6ca5bc157b9bb602db592ec3a3
SHA512

db9dfb6c02f73a255b7428d2205b306024e9b4e2ba925030d90a05bff07656aa722842eaa08bbd082fa9faac139fcd94604ed363a832715ff420a65a626b0fa6
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsi3:BbdDmjr+OtEvwDpjM8i

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1976-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000e000000012335-11.dat	CryptoLocker_rule2
behavioral1/memory/1976-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2556-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral1/memory/1976-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2556-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/1976-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000e000000012335-11.dat	UPX
behavioral1/memory/1976-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2556-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2556	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1976	2024-04-27_7bcf79df4d729fd2df6527868ed839d8_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 1976 wrote to memory of 2556	1976	2024-04-27_7bcf79df4d729fd2df6527868ed839d8_cryptolocker.exe	28
PID 1976 wrote to memory of 2556	1976	2024-04-27_7bcf79df4d729fd2df6527868ed839d8_cryptolocker.exe	28
PID 1976 wrote to memory of 2556	1976	2024-04-27_7bcf79df4d729fd2df6527868ed839d8_cryptolocker.exe	28
PID 1976 wrote to memory of 2556	1976	2024-04-27_7bcf79df4d729fd2df6527868ed839d8_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-27_7bcf79df4d729fd2df6527868ed839d8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_7bcf79df4d729fd2df6527868ed839d8_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2556

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
63KB

MD5
e003fb75d501f3539dcdd770dc25a832

SHA1
269f06a3f5d4c9c537f515edf4ab58840b2fa9eb

SHA256
7540ad98ee824dd882e8ed41ac2779dc6c4cf3a782f35816339487d1fb13b3e9

SHA512
27db923ca89d58c05b41146b0b88584ab917f33438bfbf8ec5e546e179141e76d2566849700724472d4c3f45d8fe6ff7172197764319ecbc55894d8d5c117c65

Download Submit
memory/1976-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1976-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1976-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1976-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1976-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2556-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2556-18-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download