b7fe3f50e37709e8f702c354b9f86708128a7d6e699b1bd1a15c52dd20b60536

Analysis

max time kernel
132s
max time network
140s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
03-09-2024 18:42

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General

Target

2024-09-03_433b579765ba9e70d4320abd4968daa5_cryptolocker.exe
Size

59KB
MD5

433b579765ba9e70d4320abd4968daa5
SHA1

a8263c2941c216694020eb5fe25ada9ff542b194
SHA256

b7fe3f50e37709e8f702c354b9f86708128a7d6e699b1bd1a15c52dd20b60536
SHA512

292b05785143fac94731b48bea9a584b2960e9fa7f525dd667dc565693ab0e4553a5561cd7922f708d6e8f2b7a1343f735b220befa3fec94f2043c849214a4ee
SSDEEP

768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAP3q/:H6QFElP6n+gou9cvMOtEvwDpjCpVXh/

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2176	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1312	2024-09-03_433b579765ba9e70d4320abd4968daa5_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1312-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1312-14-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000a0000000120d5-11.dat	upx
behavioral1/memory/2176-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2176-25-0x0000000000500000-0x0000000000510000-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	2024-09-03_433b579765ba9e70d4320abd4968daa5_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 1312 wrote to memory of 2176	1312	2024-09-03_433b579765ba9e70d4320abd4968daa5_cryptolocker.exe	30
PID 1312 wrote to memory of 2176	1312	2024-09-03_433b579765ba9e70d4320abd4968daa5_cryptolocker.exe	30
PID 1312 wrote to memory of 2176	1312	2024-09-03_433b579765ba9e70d4320abd4968daa5_cryptolocker.exe	30
PID 1312 wrote to memory of 2176	1312	2024-09-03_433b579765ba9e70d4320abd4968daa5_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-03_433b579765ba9e70d4320abd4968daa5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-03_433b579765ba9e70d4320abd4968daa5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1312
- 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:2176

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
59KB

MD5
a3f38a79092ad15563c830725b0ae0fd

SHA1
9c2c201f46b4d18fc21d2e1a1db3a88f1d8fde82

SHA256
18244e53de5351ae77a5400b7a317c684c071935a4b3caae8a6ad9343530a170

SHA512
c980cd34829d1f1d413962984166646fd5dd50b95d7b2142942b9458d5cf4c4548e1c7c64e60cdb37b16ef83878d09b6739ac7d9ae8938d8bb85322c4d219bb3

Download Submit
memory/1312-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1312-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1312-8-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1312-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1312-14-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2176-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2176-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download