86949b3cebbb661f11a3b354b7df6aa8558995b4640e850464f61b9db45594a3

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
21/02/2024, 14:57

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General

Target

2024-02-21_d39f7673a1b0ef45b90648c9dd5e12fe_cryptolocker.exe
Size

68KB
MD5

d39f7673a1b0ef45b90648c9dd5e12fe
SHA1

0019664fa9a89706378b64f9b2d9486edee739e1
SHA256

86949b3cebbb661f11a3b354b7df6aa8558995b4640e850464f61b9db45594a3
SHA512

dfb8865d6bbe38e0b894545c35090543fc91d0b622d1e8a4d18935fb68bf52473b1a1beb3bec16022ec5055dcd8946937b549c92fe42d582b704ed5381c42e20
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUsn:DW60sllyWOtEvwDpjwF85W

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2676-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012260-16.dat	CryptoLocker_rule2
behavioral1/memory/2732-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2676-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2676-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a000000012260-16.dat	CryptoLocker_set1
behavioral1/memory/2732-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2676-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2732	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2676	2024-02-21_d39f7673a1b0ef45b90648c9dd5e12fe_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 2676 wrote to memory of 2732	2676	2024-02-21_d39f7673a1b0ef45b90648c9dd5e12fe_cryptolocker.exe	28
PID 2676 wrote to memory of 2732	2676	2024-02-21_d39f7673a1b0ef45b90648c9dd5e12fe_cryptolocker.exe	28
PID 2676 wrote to memory of 2732	2676	2024-02-21_d39f7673a1b0ef45b90648c9dd5e12fe_cryptolocker.exe	28
PID 2676 wrote to memory of 2732	2676	2024-02-21_d39f7673a1b0ef45b90648c9dd5e12fe_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-21_d39f7673a1b0ef45b90648c9dd5e12fe_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_d39f7673a1b0ef45b90648c9dd5e12fe_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2676
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2732

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

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

Filesize
69KB

MD5
58c333ffbc44067581e318b3114bc623

SHA1
3545470f25d1e15315c636ca7d5515b803ab3337

SHA256
721ff8133d61a75e513fc4b803495efdb9242d414bbd137ca2e730a15154211c

SHA512
effd8fc3676272857dc54afdbb68e9f65b844af4a58408248cc04652f27e5c2380ebd4ed51061cd06a0918826e8ecb110508d49e333ffab787a29c54095e9183

Download Submit
memory/2676-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2676-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2676-2-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2676-5-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2676-14-0x0000000002800000-0x000000000280B000-memory.dmp

Filesize
44KB

Download
memory/2676-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2732-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2732-19-0x0000000000200000-0x0000000000206000-memory.dmp

Filesize
24KB

Download
memory/2732-24-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download