d6f37e4a6c44190803809151c08cc3bb3c8bdabfc8c2c8fcb2937d463cffd5b9

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
23-08-2024 08:41

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General

Target

2024-08-23_1e6b3a124566385b6a72e7ab0a82e720_cryptolocker.exe
Size

46KB
MD5

1e6b3a124566385b6a72e7ab0a82e720
SHA1

259a7d2e383eacf62036198e591b65e1d29eb39f
SHA256

d6f37e4a6c44190803809151c08cc3bb3c8bdabfc8c2c8fcb2937d463cffd5b9
SHA512

841523be53c63691cff9dd72c8e96fb41b5302a6a6571282d70bae7030ac4b5f07b6d57b86817180dcc5cae9ae281e49411c795bb57b421cd681c0e6e4fe8857
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0STX73OBqOM:bODOw9acifH+Y/

Score

7^/10

discovery upx

Malware Config

Signatures

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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	2024-08-23_1e6b3a124566385b6a72e7ab0a82e720_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3012	lossy.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4404-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/files/0x0009000000023458-13.dat	upx
behavioral2/memory/4404-17-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/3012-26-0x0000000008000000-0x000000000800F000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-23_1e6b3a124566385b6a72e7ab0a82e720_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lossy.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4404 wrote to memory of 3012	4404	2024-08-23_1e6b3a124566385b6a72e7ab0a82e720_cryptolocker.exe	86
PID 4404 wrote to memory of 3012	4404	2024-08-23_1e6b3a124566385b6a72e7ab0a82e720_cryptolocker.exe	86
PID 4404 wrote to memory of 3012	4404	2024-08-23_1e6b3a124566385b6a72e7ab0a82e720_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-08-23_1e6b3a124566385b6a72e7ab0a82e720_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-23_1e6b3a124566385b6a72e7ab0a82e720_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4404
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3012

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\lossy.exe

Filesize
46KB

MD5
ddfa1e80332142c2e63a778506c95122

SHA1
5deeb27fe3d0b89594ed172584549f13bac185e9

SHA256
3da75cc38f1285e240612283c1ec4ddbfd4e1f4279f0ff9a5111a44db9789729

SHA512
77457d5bb41baaf62ef87a01c27e25e89f96b3de4ac6b1c73a2e7431611d5a497f5933c43b59e7a2cde5b9d42815b2949784b18385894c6abe60fa7ba47f9a48

Download Submit
memory/3012-20-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/3012-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3012-26-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/4404-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/4404-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4404-2-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4404-3-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/4404-17-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download