ff31c6bd33e53ff7541718849df63c9d1138e067578a84afbc180f444d89b268

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2024 05:33

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General

Target

2024-09-19_be90cf87cb649492f3b7fe83041380fc_cryptolocker.exe
Size

45KB
MD5

be90cf87cb649492f3b7fe83041380fc
SHA1

1fc2dbc48d4d02ad89a2aa4fa399d96f6532211c
SHA256

ff31c6bd33e53ff7541718849df63c9d1138e067578a84afbc180f444d89b268
SHA512

3de8705d5f6280c98c0c625ade36fb3099f78c10530343c5e96a6fa24ea4415e8cc46c50987d543a109eee9363377136aaf79fae1e2d4ee57b45ff120d703ec4
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0STX73OBqHI:bODOw9acifH+Yo

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	2024-09-19_be90cf87cb649492f3b7fe83041380fc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1400	lossy.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3800-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/files/0x00080000000234ce-13.dat	upx
behavioral2/memory/3800-18-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/1400-26-0x0000000008000000-0x000000000800F000-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	2024-09-19_be90cf87cb649492f3b7fe83041380fc_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 3800 wrote to memory of 1400	3800	2024-09-19_be90cf87cb649492f3b7fe83041380fc_cryptolocker.exe	82
PID 3800 wrote to memory of 1400	3800	2024-09-19_be90cf87cb649492f3b7fe83041380fc_cryptolocker.exe	82
PID 3800 wrote to memory of 1400	3800	2024-09-19_be90cf87cb649492f3b7fe83041380fc_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-19_be90cf87cb649492f3b7fe83041380fc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_be90cf87cb649492f3b7fe83041380fc_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3800
- 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:1400

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

Replay Monitor

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Downloads

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

Filesize
46KB

MD5
4146c7f99236131788357c75250f1ceb

SHA1
5b117d709f1f5cb771ebd999846ece9a14cc6b86

SHA256
27b883b5d3cfb1e1bd41e67e283a150bcfbfe26cc5861ea2c29c7305d2f12278

SHA512
38d8ed214d20d86d936fbe5e82734fbbe4f21d88bc87ce8948142eea1180f8ca3b45c5485a48aa56950a515d07c509fc66adf60ce8ebd01f0e42ab6700825a6f

Download Submit
memory/1400-19-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/1400-25-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/1400-26-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3800-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3800-1-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/3800-2-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/3800-3-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3800-18-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download