8891179fbdb8f13ad394b5a2ec81777942943ebe08b38053ecb9d5a5ee1b0960

Analysis

max time kernel
142s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
11-08-2024 20:08

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General

Target

2024-08-11_fae05603799a77e755b2da2bc82e09ee_cryptolocker.exe
Size

36KB
MD5

fae05603799a77e755b2da2bc82e09ee
SHA1

00aa4a33156b32a80c985ad5c67e7615195c491d
SHA256

8891179fbdb8f13ad394b5a2ec81777942943ebe08b38053ecb9d5a5ee1b0960
SHA512

43c37d85ca61c5dc5c9dcf88e5c35639ac4506830ef5925683ec2054086452212932af863ec2d756903bc886c7205290ee4945e8e05d38df413cbffc97c6ee6e
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkIT6S:qDdFJy3QMOtEvwDpjjWMl7T6S

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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	2024-08-11_fae05603799a77e755b2da2bc82e09ee_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4416	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2652-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00090000000234b2-13.dat	upx
behavioral2/memory/2652-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4416-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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

System Information Discovery
T1082

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	asih.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-11_fae05603799a77e755b2da2bc82e09ee_cryptolocker.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2652 wrote to memory of 4416	2652	2024-08-11_fae05603799a77e755b2da2bc82e09ee_cryptolocker.exe	84
PID 2652 wrote to memory of 4416	2652	2024-08-11_fae05603799a77e755b2da2bc82e09ee_cryptolocker.exe	84
PID 2652 wrote to memory of 4416	2652	2024-08-11_fae05603799a77e755b2da2bc82e09ee_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-08-11_fae05603799a77e755b2da2bc82e09ee_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-11_fae05603799a77e755b2da2bc82e09ee_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2652
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4416

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\asih.exe

Filesize
36KB

MD5
43ca439dd777a226f64a6c3af3ee09fb

SHA1
a7f36c9e068c556b32bbed213fb6f0d825d3fafb

SHA256
a7e04a8353f9380d363054685c45bcfb71138adc884b94c331ea43cacb6fc04a

SHA512
3aaef8bd40278bdedcd43b43f323c40134ff997d91c341b7b056855ec996d497ac447924e12639dbf878f7accd22091d1f5e4c97eb06712ae9790301e6d1d54a

Download Submit
memory/2652-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2652-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2652-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2652-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2652-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4416-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4416-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4416-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download