b6b678408029e2ebb44ad13ec79919f218c0d2a6825f6362e79fb51812b7e7f5

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
28/04/2024, 05:49

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General

Target

2024-04-28_f0637f48b3cb1978e5ce6648583605fc_cryptolocker.exe
Size

68KB
MD5

f0637f48b3cb1978e5ce6648583605fc
SHA1

c6744ace6707846525a1260865605124231373f5
SHA256

b6b678408029e2ebb44ad13ec79919f218c0d2a6825f6362e79fb51812b7e7f5
SHA512

1aadf41ae9a4b58eb8b7bef100ce11cda77da51b80ed42499f6ccc76da62e4af2b783750822a1bb8647342bbd3fb7cae3f8c5b2359413b487d549fff3b1b4ad6
SSDEEP

768:quVbxjgQNQXtckstOOtEvwDpjAaDOK6PsED3VK2+ZtyOjgO4r9vFAg2rq6W1A1PJ:quJu9cvMOtEvwDpjWYTjipvF2bx1PQAJ

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/384-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000015cce-11.dat	CryptoLocker_rule2
behavioral1/memory/384-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2004-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2004-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/384-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000015cce-11.dat	CryptoLocker_set1
behavioral1/memory/384-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2004-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2004-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/384-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000c000000015cce-11.dat	UPX
behavioral1/memory/384-15-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2004-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2004-27-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2004	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
384	2024-04-28_f0637f48b3cb1978e5ce6648583605fc_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/384-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000c000000015cce-11.dat	upx
behavioral1/memory/384-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2004-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2004-27-0x0000000000500000-0x000000000050F000-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 384 wrote to memory of 2004	384	2024-04-28_f0637f48b3cb1978e5ce6648583605fc_cryptolocker.exe	28
PID 384 wrote to memory of 2004	384	2024-04-28_f0637f48b3cb1978e5ce6648583605fc_cryptolocker.exe	28
PID 384 wrote to memory of 2004	384	2024-04-28_f0637f48b3cb1978e5ce6648583605fc_cryptolocker.exe	28
PID 384 wrote to memory of 2004	384	2024-04-28_f0637f48b3cb1978e5ce6648583605fc_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-28_f0637f48b3cb1978e5ce6648583605fc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_f0637f48b3cb1978e5ce6648583605fc_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:384
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2004

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
68KB

MD5
933c2f4b9fd9d418cc7b8aca44872bfc

SHA1
654b4616c51dd0c34d17dfd9915795b6bc614006

SHA256
93991e80122edc29920d1eb558cd59a681603a80f15632873e08181fc5f1dd97

SHA512
eb7c88727b467a002a19f4108698a5488cb467dd91fc2d99793273025f0374799ed70bbb3dd52d46ed501e50575ea0bfde3826e9aa36c61b0f3d23d530dbe597

Download Submit
memory/384-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/384-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/384-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/384-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/384-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2004-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2004-19-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2004-26-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2004-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download