102048d4112bb5d0c2436f042e7ea8db687dc0e7379a7e3bb51b3eca9f3ac008

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
02-10-2024 01:27

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General

Target

2024-10-02_791ebff51ebd1d55e1588c386566536f_cryptolocker.exe
Size

39KB
MD5

791ebff51ebd1d55e1588c386566536f
SHA1

0a0b39f22771eca5c18fa71516cd809670114ca0
SHA256

102048d4112bb5d0c2436f042e7ea8db687dc0e7379a7e3bb51b3eca9f3ac008
SHA512

d011d64bb88b9f8ce026e66249dbfb05372d580fe24ee97f06fc666de6f2027945f6cdf77333fcdae7281b697712f6c9a0b2e4e9d9d46875202942e2e4b8882b
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITnN:qDdFJy3QMOtEvwDpjjWMl7TN

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2740	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2760	2024-10-02_791ebff51ebd1d55e1588c386566536f_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2760-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c000000012283-11.dat	upx
behavioral1/memory/2740-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2760-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2740-27-0x0000000000500000-0x0000000000510000-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	2024-10-02_791ebff51ebd1d55e1588c386566536f_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2760 wrote to memory of 2740	2760	2024-10-02_791ebff51ebd1d55e1588c386566536f_cryptolocker.exe	30
PID 2760 wrote to memory of 2740	2760	2024-10-02_791ebff51ebd1d55e1588c386566536f_cryptolocker.exe	30
PID 2760 wrote to memory of 2740	2760	2024-10-02_791ebff51ebd1d55e1588c386566536f_cryptolocker.exe	30
PID 2760 wrote to memory of 2740	2760	2024-10-02_791ebff51ebd1d55e1588c386566536f_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-10-02_791ebff51ebd1d55e1588c386566536f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-02_791ebff51ebd1d55e1588c386566536f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2760
- 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:2740

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
39KB

MD5
0c04b33ad12b7f32ad15c0e91c3d8aa7

SHA1
d27ea1e4a0976abef414593a9887e110945bee86

SHA256
7b026a0438be1e42faca6162dfae1ea05949a6f1df7f18aba472b3c3576bb0aa

SHA512
be4c238008a2cfd2b23db7d7379e7adb2cb9a68680c50a9426b5c201a8cb347508b371045840fe56804926249f2056dffb01eacc804286dc645f0cf94e2a89e5

Download Submit
memory/2740-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2740-19-0x0000000000210000-0x0000000000216000-memory.dmp

Filesize
24KB

Download
memory/2740-26-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2740-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2760-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2760-1-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2760-2-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2760-3-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2760-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download