065287223427832c6707b2ecb48721c013abf2cae3108a2d97850eae3effc8fd

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21/04/2024, 03:29

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General

Target

2024-04-21_0aea1a6000351510a704fe6658a01459_cryptolocker.exe
Size

71KB
MD5

0aea1a6000351510a704fe6658a01459
SHA1

ff86064d47a88107b804994abe0d3da67e449139
SHA256

065287223427832c6707b2ecb48721c013abf2cae3108a2d97850eae3effc8fd
SHA512

0da2062da2ed4e751a54f42db353a36852f32514b41fe67379a37f589f9f3190a48e031f7d43f75ce4e0ee95209a539522d5d2ac23e32395af39acfa624f2dd7
SSDEEP

1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9S:C4Q2c94OtEvwDpj4H8zH

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2192-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001224f-11.dat	CryptoLocker_rule2
behavioral1/memory/2192-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3032-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3032-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2192-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3032-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3032-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2192-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b00000001224f-11.dat	UPX
behavioral1/memory/2192-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3032-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3032-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3032	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2192	2024-04-21_0aea1a6000351510a704fe6658a01459_cryptolocker.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2192-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b00000001224f-11.dat	upx
behavioral1/memory/2192-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3032-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3032-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 2192 wrote to memory of 3032	2192	2024-04-21_0aea1a6000351510a704fe6658a01459_cryptolocker.exe	28
PID 2192 wrote to memory of 3032	2192	2024-04-21_0aea1a6000351510a704fe6658a01459_cryptolocker.exe	28
PID 2192 wrote to memory of 3032	2192	2024-04-21_0aea1a6000351510a704fe6658a01459_cryptolocker.exe	28
PID 2192 wrote to memory of 3032	2192	2024-04-21_0aea1a6000351510a704fe6658a01459_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-21_0aea1a6000351510a704fe6658a01459_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-21_0aea1a6000351510a704fe6658a01459_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2192
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3032

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
71KB

MD5
baa96763b4c8bfce65adeecd6f605cb1

SHA1
a7aa6cbe2a3a339f482428ee9ef8ba2a0f9ab775

SHA256
56515b4cd0406d1edd5f3dab88a66153d4b8c7f5831170e33e3eb4e715e26b7d

SHA512
01f0526b203e2cfd3d56ad22ee151d87bfd08c5b62aead2ece9f5998c25cd875584d7b731174da4c8294b6ff84f8d00476bcdbadc7f109b3405f1b236a90cc24

Download Submit
memory/2192-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2192-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2192-3-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2192-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2192-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3032-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3032-18-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/3032-22-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3032-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download