030379cb0c88b8de439c03ff95bae7f8eb105258306b04e9087a802098749d57

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
23/01/2024, 19:02

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General

Target

2024-01-23_d9fd8fc693da7eddce1cce6b5f72b3d6_cryptolocker.exe
Size

93KB
MD5

d9fd8fc693da7eddce1cce6b5f72b3d6
SHA1

714e4f9d6efcad152c0a3fddbfc10d4a42874779
SHA256

030379cb0c88b8de439c03ff95bae7f8eb105258306b04e9087a802098749d57
SHA512

af310ca0f21cec5bd495978ee92bca8760dabacc5fa003cf5bfbec0f85310c60cd3f21455e0ee133d82d2b0b920d3b3b14135252e87a4c9e1412299b78b0c4ac
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp01Eq:AnBdOOtEvwDpj6z1

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3044-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0009000000022480-13.dat	CryptoLocker_rule2
behavioral2/memory/3044-20-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/748-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3044-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0009000000022480-13.dat	CryptoLocker_set1
behavioral2/memory/3044-20-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/748-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3044-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x0009000000022480-13.dat	UPX
behavioral2/memory/3044-20-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/748-26-0x0000000000500000-0x000000000050F000-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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-01-23_d9fd8fc693da7eddce1cce6b5f72b3d6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
748	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3044-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0009000000022480-13.dat	upx
behavioral2/memory/3044-20-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/748-26-0x0000000000500000-0x000000000050F000-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 3 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 748	3044	2024-01-23_d9fd8fc693da7eddce1cce6b5f72b3d6_cryptolocker.exe	89
PID 3044 wrote to memory of 748	3044	2024-01-23_d9fd8fc693da7eddce1cce6b5f72b3d6_cryptolocker.exe	89
PID 3044 wrote to memory of 748	3044	2024-01-23_d9fd8fc693da7eddce1cce6b5f72b3d6_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-01-23_d9fd8fc693da7eddce1cce6b5f72b3d6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-23_d9fd8fc693da7eddce1cce6b5f72b3d6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:748

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\asih.exe

Filesize
93KB

MD5
53271335206eb423282c2f17f3f86256

SHA1
59e52d11cf892159511901f1e476250c223aa2f6

SHA256
de5dfc06be1b9f688adfecd38033c0c130a606367416bc1f5bb6b4ff90bb5d87

SHA512
37d42d5b48b8c882a7b1cba2b2e5b8e7a45ab5e3f8b3cdd4b29785c0ae993c528e96a4919978629c2f2910558eaa37ca1d90ebba1d00afd692c00af1854d17bc

Download Submit
memory/748-18-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/748-19-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/748-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3044-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3044-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3044-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3044-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/3044-20-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download