67d0ddd0aa3a5c722bb39e6fbd6ec86e62dafb6d61b7594077c090aa372f2d80

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
31/05/2024, 22:44

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General

Target

2024-05-31_93267d7373a314898bf45590aa62da7d_cryptolocker.exe
Size

42KB
MD5

93267d7373a314898bf45590aa62da7d
SHA1

e8ca992495a6c97f9d6d52aed5b2f2babe84c1bc
SHA256

67d0ddd0aa3a5c722bb39e6fbd6ec86e62dafb6d61b7594077c090aa372f2d80
SHA512

2e778d087220515b5d376b7d1f5c7ff35730eff4f9f2a973e32e4621c614c46a73c006befbb6dacbd5633b2ac3c1bfc74b9855d2c2f2b9946c978aed10354940
SSDEEP

768:ba74zYcgT/EkdCQgpwXFXSqQXfj0xKoWOU:ba6YcA/Xk3wXFXSqAJiU

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2884-0-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00090000000149f5-11.dat	CryptoLocker_rule2
behavioral1/memory/3016-16-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2884-15-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3016-26-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2884-0-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral1/files/0x00090000000149f5-11.dat	UPX
behavioral1/memory/3016-16-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral1/memory/2884-15-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral1/memory/3016-26-0x0000000008000000-0x000000000800F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3016	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2884	2024-05-31_93267d7373a314898bf45590aa62da7d_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2884-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/files/0x00090000000149f5-11.dat	upx
behavioral1/memory/3016-16-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2884-15-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/3016-26-0x0000000008000000-0x000000000800F000-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 2884 wrote to memory of 3016	2884	2024-05-31_93267d7373a314898bf45590aa62da7d_cryptolocker.exe	28
PID 2884 wrote to memory of 3016	2884	2024-05-31_93267d7373a314898bf45590aa62da7d_cryptolocker.exe	28
PID 2884 wrote to memory of 3016	2884	2024-05-31_93267d7373a314898bf45590aa62da7d_cryptolocker.exe	28
PID 2884 wrote to memory of 3016	2884	2024-05-31_93267d7373a314898bf45590aa62da7d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-31_93267d7373a314898bf45590aa62da7d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_93267d7373a314898bf45590aa62da7d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3016

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\hasfj.exe

Filesize
42KB

MD5
85d3ceb6befbe2922495bd649cf049be

SHA1
3c1ad38d6d9c6fdb1486ffd28406d783ebf3ac75

SHA256
2eda17945d872a414ca8258672ffdf9dc6a827355344f94adb12a7fa78e3682c

SHA512
d8d5bee76f091b34a2348bc064627843445254d9fc96298cfe46c5f3d6b667514d641bf84aa9f686edb05303df22e26d6c96fec110d183a8b301f192b6eee0cc

Download Submit
memory/2884-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2884-1-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2884-2-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download
memory/2884-9-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2884-15-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3016-16-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3016-18-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/3016-25-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/3016-26-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download