5e9650c5032191c6f17381f68d9ff16b0575c1bc7c0d383831a62e026df9685c

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
19/04/2024, 20:49

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General

Target

2024-04-19_8dc866064ef6e982248e3f12b5736c66_cryptolocker.exe
Size

39KB
MD5

8dc866064ef6e982248e3f12b5736c66
SHA1

57e935080346831b7bc4241ae92ba16ff573fb33
SHA256

5e9650c5032191c6f17381f68d9ff16b0575c1bc7c0d383831a62e026df9685c
SHA512

49b0aa07546e1fe20a88fa4676ef86c3a2d29bdd04f3bd2b515bc7b308d928b84e94094a6e20c69fbe6cd3d72d514338ee279c801656104430c2a57d358f501f
SSDEEP

384:ba74uGLLQRcsdeQ72ngEr4K7YmE8j6CQYnrz1ZhdaXFXSCVQTLfjDpXqxKH0:ba74zYcgT/EkdCQgpwXFXSqQXfj0xKU

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3104-0-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x001c00000001e97e-13.dat	CryptoLocker_rule2
behavioral2/memory/3600-18-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3104-17-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3600-27-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/3104-0-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/files/0x001c00000001e97e-13.dat	UPX
behavioral2/memory/3600-18-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/memory/3104-17-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/memory/3600-27-0x0000000008000000-0x000000000800F000-memory.dmp	UPX

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	2024-04-19_8dc866064ef6e982248e3f12b5736c66_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3600	hasfj.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3104-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/files/0x001c00000001e97e-13.dat	upx
behavioral2/memory/3600-18-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/3104-17-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/3600-27-0x0000000008000000-0x000000000800F000-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 3 IoCs

description	pid	Process	procid_target
PID 3104 wrote to memory of 3600	3104	2024-04-19_8dc866064ef6e982248e3f12b5736c66_cryptolocker.exe	88
PID 3104 wrote to memory of 3600	3104	2024-04-19_8dc866064ef6e982248e3f12b5736c66_cryptolocker.exe	88
PID 3104 wrote to memory of 3600	3104	2024-04-19_8dc866064ef6e982248e3f12b5736c66_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-04-19_8dc866064ef6e982248e3f12b5736c66_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-19_8dc866064ef6e982248e3f12b5736c66_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3104
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3600

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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\hasfj.exe

Filesize
40KB

MD5
6b04ef80d33946e352900d5767ca053a

SHA1
46ef4833756ec492f40fe7e7502524f4a62aac05

SHA256
b4d61f4030bfa201d7266d33f68c997d5714717a36f3537590ccd2a743566e2b

SHA512
ffafb334c9317e5b886cdf94cc7397259c937d1e3aca4a2d6cdc49a5d89aba4eb343eb66c4e3ee652af2f8a50dc2d383360db5b199fe79d2143ed94ec8651949

Download Submit
memory/3104-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3104-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/3104-2-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/3104-3-0x0000000003140000-0x0000000003146000-memory.dmp

Filesize
24KB

Download
memory/3104-17-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3600-18-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3600-20-0x00000000022B0000-0x00000000022B6000-memory.dmp

Filesize
24KB

Download
memory/3600-21-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/3600-27-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download