ef8abe2b5c566deeed78b250af7bb0e8df12db85efb4cd175b4e651a41b0c8d7

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28/03/2024, 04:56

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General

Target

2024-03-28_d97ac71c448ae1a3e74ea03516c9cdb8_cryptolocker.exe
Size

40KB
MD5

d97ac71c448ae1a3e74ea03516c9cdb8
SHA1

bc0060ea9b1a32646896b4cffffbe0a52c04cb15
SHA256

ef8abe2b5c566deeed78b250af7bb0e8df12db85efb4cd175b4e651a41b0c8d7
SHA512

eea231afe40c9364ca91b3df56c81562f2f18581ea769fa8423be82babb867ad006c10bf2bfe75fdaa57cc9bcca844f9e878aeb8cdaa582be5cf6a2364b4293d
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9RzhwaO4t:i5nkFGMOtEvwDpjR+TD

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1368-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012240-11.dat	CryptoLocker_rule2
behavioral1/memory/1368-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2584-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2584-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/1368-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2584-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2584-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral1/memory/1368-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/files/0x000c000000012240-11.dat	INDICATOR_EXE_Packed_MPress
behavioral1/memory/1368-15-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2584-16-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2584-26-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

pid	Process
2584	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
1368	2024-03-28_d97ac71c448ae1a3e74ea03516c9cdb8_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 1368 wrote to memory of 2584	1368	2024-03-28_d97ac71c448ae1a3e74ea03516c9cdb8_cryptolocker.exe	28
PID 1368 wrote to memory of 2584	1368	2024-03-28_d97ac71c448ae1a3e74ea03516c9cdb8_cryptolocker.exe	28
PID 1368 wrote to memory of 2584	1368	2024-03-28_d97ac71c448ae1a3e74ea03516c9cdb8_cryptolocker.exe	28
PID 1368 wrote to memory of 2584	1368	2024-03-28_d97ac71c448ae1a3e74ea03516c9cdb8_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-28_d97ac71c448ae1a3e74ea03516c9cdb8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_d97ac71c448ae1a3e74ea03516c9cdb8_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1368
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2584

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\misid.exe

Filesize
40KB

MD5
d44c5fb19d17def8213ec97396e5c1ec

SHA1
d71bb0c1ece6b70f9fe4f309d5758f9aeb60964d

SHA256
cb0ab1ad9786421bcbd3eb8b01ea712eeaca6c7acb457a2c1100467a1ffe56fa

SHA512
c37689f7153db06d96c4658d79808e0dfc311a128f262ab1c84c183c81ff8ba8593315c96f99369ddf27f542910e97baa25663ec16b5e1dd4e8b3d66b6ecf502

Download Submit
memory/1368-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1368-1-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/1368-2-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/1368-4-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/1368-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2584-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2584-20-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2584-18-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2584-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download