eb0567a4abd26c001b0a7f99d31e7c98e5cdd23fdd58758ca1dbeda3d7b0ff33

Analysis

max time kernel
147s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
25/02/2024, 06:30

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General

Target

2024-02-25_702e53ac5c0bf9acef1a94bd5359c80a_cryptolocker.exe
Size

61KB
MD5

702e53ac5c0bf9acef1a94bd5359c80a
SHA1

7726d645130e8b80d1b4955b10da46a3e7af123d
SHA256

eb0567a4abd26c001b0a7f99d31e7c98e5cdd23fdd58758ca1dbeda3d7b0ff33
SHA512

5850c21a400395307b31c9cdd1a4f62eb6a275904f7ab41674608b708af10a74e555d7347c56f1d6c0f45ef1ce3e518855bbc3ccd7aea7979fcd25d0c101273a
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mLZ5K7hR35:zj+soPSMOtEvwDpj4kpmeLmq35

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4064-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00070000000231eb-13.dat	CryptoLocker_rule2
behavioral2/memory/4064-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4992-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4064-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00070000000231eb-13.dat	CryptoLocker_set1
behavioral2/memory/4064-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4992-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4064-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x00070000000231eb-13.dat	UPX
behavioral2/memory/4064-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4992-26-0x0000000000500000-0x0000000000510000-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-1-5-21-1790404759-2178872477-2616469472-1000\Control Panel\International\Geo\Nation	2024-02-25_702e53ac5c0bf9acef1a94bd5359c80a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4992	misid.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4064-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00070000000231eb-13.dat	upx
behavioral2/memory/4064-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4992-26-0x0000000000500000-0x0000000000510000-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 3 IoCs

description	pid	Process	procid_target
PID 4064 wrote to memory of 4992	4064	2024-02-25_702e53ac5c0bf9acef1a94bd5359c80a_cryptolocker.exe	92
PID 4064 wrote to memory of 4992	4064	2024-02-25_702e53ac5c0bf9acef1a94bd5359c80a_cryptolocker.exe	92
PID 4064 wrote to memory of 4992	4064	2024-02-25_702e53ac5c0bf9acef1a94bd5359c80a_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-02-25_702e53ac5c0bf9acef1a94bd5359c80a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_702e53ac5c0bf9acef1a94bd5359c80a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4064
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4992

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\misid.exe

Filesize
62KB

MD5
7141a9dd97d57736172c2dba1466f497

SHA1
052653a77d39bf5e2bc0ef119eeeff5e8b2882a3

SHA256
5515c17032325718594fd0e4197a72eea4c4615c24d39d77145eb5192084bf99

SHA512
1dce3f1616dea874c1f8a79f67ad7bf8e576a3283112a2d54e116577b8369e5a32dc6d1155112ceaeb17b9748bab27512bb5c51ae47b8ed89edc716c7654373b

Download Submit
memory/4064-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4064-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4064-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4064-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4064-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4992-19-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/4992-20-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/4992-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download