f389e6e76f7656ca310bd1380e11b161142a1f946bcc009b1af1779d9233d3e2

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
02/10/2024, 02:48

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General

Target

2024-10-02_91afe78f340e369bc0ae84eb9f903766_cryptolocker.exe
Size

46KB
MD5

91afe78f340e369bc0ae84eb9f903766
SHA1

0dc0f656701cb1e680adc97635a57fd69250ef21
SHA256

f389e6e76f7656ca310bd1380e11b161142a1f946bcc009b1af1779d9233d3e2
SHA512

6113570f6c70a302bd9e892840780a7c113e5fcc9aa7a641e5036bc439fc662fed725bd75e63ea7e81f356be4432953d3a226d0728fa9709cc85826eeb30d26d
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0STX73OBqU:bODOw9acifH+YU

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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	2024-10-02_91afe78f340e369bc0ae84eb9f903766_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4900	lossy.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1276-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/files/0x00080000000234d6-13.dat	upx
behavioral2/memory/1276-17-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/4900-26-0x0000000008000000-0x000000000800F000-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	lossy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-02_91afe78f340e369bc0ae84eb9f903766_cryptolocker.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1276 wrote to memory of 4900	1276	2024-10-02_91afe78f340e369bc0ae84eb9f903766_cryptolocker.exe	82
PID 1276 wrote to memory of 4900	1276	2024-10-02_91afe78f340e369bc0ae84eb9f903766_cryptolocker.exe	82
PID 1276 wrote to memory of 4900	1276	2024-10-02_91afe78f340e369bc0ae84eb9f903766_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-10-02_91afe78f340e369bc0ae84eb9f903766_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-02_91afe78f340e369bc0ae84eb9f903766_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1276
- 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:4900

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
017c5b1cb039620882427af08df115c2

SHA1
6ab7ad4fcd757c3846124a362b01b887c5929f49

SHA256
0e6283956deb0ab16e65d2309318280f36d166cc4d8e02875d1d24f7d5f1553b

SHA512
d610fd266bceb0564889ee71175ef8d465e84324358252449454c933fbf77ea9f57a0f8589f352a6d5876b46d6261e18f9a1aec31f7c61e56bc2b8317d6d9a25

Download Submit
memory/1276-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/1276-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/1276-2-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/1276-3-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/1276-17-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/4900-19-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4900-25-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4900-26-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download