dbdc678e85a82abe7ba952b49c4762481a3131a44f2098a47021fda7657f1009

Analysis

max time kernel
147s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
17/04/2024, 21:57

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General

Target

2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe
Size

65KB
MD5

cafa1b722bfc9c0eadc65c74c8b257c7
SHA1

bb398c31ef863c493ab86d598506716dc105bcfd
SHA256

dbdc678e85a82abe7ba952b49c4762481a3131a44f2098a47021fda7657f1009
SHA512

9b7c457f8a6da3d8275968bfa6e574c916427080223359d897c9ca0b7357e4826ccd2af1fac9e01acbb0a395912bce81a2c733748d9cf7fcf0b2f4b8d9b15455
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mLZ5kJ7AK2R:zj+soPSMOtEvwDpj4kpmeLmQlAlR

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1596-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00070000000233e3-13.dat	CryptoLocker_rule2
behavioral2/memory/1596-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3300-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1596-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00070000000233e3-13.dat	CryptoLocker_set1
behavioral2/memory/1596-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3300-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1596-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x00070000000233e3-13.dat	UPX
behavioral2/memory/1596-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3300-26-0x0000000000500000-0x0000000000510000-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-1-5-21-553605503-2331009851-2137262461-1000\Control Panel\International\Geo\Nation	2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3300	misid.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1596-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00070000000233e3-13.dat	upx
behavioral2/memory/1596-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3300-26-0x0000000000500000-0x0000000000510000-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 1596 wrote to memory of 3300	1596	2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe	84
PID 1596 wrote to memory of 3300	1596	2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe	84
PID 1596 wrote to memory of 3300	1596	2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1596
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3300

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
65KB

MD5
f8981b8d63e0b03988109f0678c0b87e

SHA1
6e1f2d025bdbe0671087f90ca8a9027025170a48

SHA256
705fe0bebe159caf63a8ae6d4b4f264e87a38a04ee77cf70cbe86fb08660b5d8

SHA512
0eee3246c14bce8c02d15f9d18ac372a542a9544d224739d550ba3ab4b44e38547522071fe6fd8de3fb8f45c45c2be6383a0e52756847aa5144a65cd39306f67

Download Submit
memory/1596-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1596-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1596-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1596-3-0x0000000000810000-0x0000000000816000-memory.dmp

Filesize
24KB

Download
memory/1596-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3300-19-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3300-25-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3300-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download