847c8ecdbe6fda2297c09ebba5052498f6791b6389e61d1bbf3ba82ae39341df

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
11/05/2024, 07:24

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General

Target

2024-05-11_06cc678c257f63167c12305c0d7101aa_cryptolocker.exe
Size

39KB
MD5

06cc678c257f63167c12305c0d7101aa
SHA1

73d95b80ec0dde3806993c9228d648378dafb91d
SHA256

847c8ecdbe6fda2297c09ebba5052498f6791b6389e61d1bbf3ba82ae39341df
SHA512

8a24e6dd66228a0bdda974a5c9bb93b34e5c5bf66392c1d8e8903af474bf3fc45308bb5ec5269249ecab1ed926a02a0df72c7134f681fcc9a4e7b072fcec5042
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITY/F:qDdFJy3QMOtEvwDpjjWMl7TY

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3152-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000a00000002328e-13.dat	CryptoLocker_rule2
behavioral2/memory/3152-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1976-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1976-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/3152-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000a00000002328e-13.dat	CryptoLocker_set1
behavioral2/memory/3152-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1976-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1976-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/3152-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000a00000002328e-13.dat	UPX
behavioral2/memory/3152-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1976-19-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1976-28-0x0000000000500000-0x0000000000510000-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-11_06cc678c257f63167c12305c0d7101aa_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1976	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3152-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000a00000002328e-13.dat	upx
behavioral2/memory/3152-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1976-19-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1976-28-0x0000000000500000-0x0000000000510000-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 3152 wrote to memory of 1976	3152	2024-05-11_06cc678c257f63167c12305c0d7101aa_cryptolocker.exe	83
PID 3152 wrote to memory of 1976	3152	2024-05-11_06cc678c257f63167c12305c0d7101aa_cryptolocker.exe	83
PID 3152 wrote to memory of 1976	3152	2024-05-11_06cc678c257f63167c12305c0d7101aa_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-11_06cc678c257f63167c12305c0d7101aa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-11_06cc678c257f63167c12305c0d7101aa_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3152
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1976

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
39KB

MD5
2ee67f5f6f6372548f80c81425353ced

SHA1
7c10c99853f60bd7562ac214d1ee3859bf8c8378

SHA256
2c80daee573a6ae2fcef511278b39e9a3b64d71ec50bfbb9f9be3216c24145bf

SHA512
db6dd841173d833ad794bc5b71759e428a75a7d547b152896c1f3e10a81a77356f6cb28865426005f81eb1658376f97e1ce963dc652d399bacef16b0b4a0c898

Download Submit
memory/1976-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1976-21-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/1976-27-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1976-28-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3152-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3152-1-0x0000000000800000-0x0000000000806000-memory.dmp

Filesize
24KB

Download
memory/3152-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3152-9-0x0000000000800000-0x0000000000806000-memory.dmp

Filesize
24KB

Download
memory/3152-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download