f6af733af4092c054ddd43a2d1fc714ad481c67ec8c77b0d77bf71e5875c4181

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
13/02/2024, 00:36

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General

Target

2024-02-13_939a0258d4d3f104372dcf7d85e7f086_cryptolocker.exe
Size

56KB
MD5

939a0258d4d3f104372dcf7d85e7f086
SHA1

a61b51f7635b8e38812682343ed36d5f2df21a97
SHA256

f6af733af4092c054ddd43a2d1fc714ad481c67ec8c77b0d77bf71e5875c4181
SHA512

c7e24b26772b42740fc5a97e724895ea14cc2b43e8789111ad102a15c6724b1b7ab08aafb3eb6a89b6bf624277d51b0d8da5b5b1dae9466ea7455acb39f28b1b
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61N:BbdDmjr+OtEvwDpjML

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2480-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012252-11.dat	CryptoLocker_rule2
behavioral1/memory/2412-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2480-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2480-14-0x0000000001F30000-0x0000000001F40000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2412-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2412-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2480-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2412-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/2480-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c000000012252-11.dat	UPX
behavioral1/memory/2412-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2480-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2480-14-0x0000000001F30000-0x0000000001F40000-memory.dmp	UPX
behavioral1/memory/2412-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2412	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2480	2024-02-13_939a0258d4d3f104372dcf7d85e7f086_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 2480 wrote to memory of 2412	2480	2024-02-13_939a0258d4d3f104372dcf7d85e7f086_cryptolocker.exe	28
PID 2480 wrote to memory of 2412	2480	2024-02-13_939a0258d4d3f104372dcf7d85e7f086_cryptolocker.exe	28
PID 2480 wrote to memory of 2412	2480	2024-02-13_939a0258d4d3f104372dcf7d85e7f086_cryptolocker.exe	28
PID 2480 wrote to memory of 2412	2480	2024-02-13_939a0258d4d3f104372dcf7d85e7f086_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-13_939a0258d4d3f104372dcf7d85e7f086_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_939a0258d4d3f104372dcf7d85e7f086_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2480
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2412

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
57KB

MD5
8f097b97a7de98dad7b3c84511be693e

SHA1
fa659afb493128965794c3705875d2bab5bc7b51

SHA256
1a8da358861bc09911c632e2bc01f6fe8e9464c4595f15b202ffed16f8e97c76

SHA512
418ed8a218b7131eb65482f4af148cb7e91623659c9016d68e2a47d359ff19943441397f98d1e1c9df1cb332a6d3f57f92543db02570336ffd915b5aa63a6c0d

Download Submit
memory/2412-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2412-19-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2412-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2412-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2480-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2480-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2480-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2480-3-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2480-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2480-14-0x0000000001F30000-0x0000000001F40000-memory.dmp

Filesize
64KB

Download