ee8a26d3cf4927ecdb9dc74a57b2a67cc7a1bc306fd73d7dd5bba09a910ed139

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 18:51

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General

Target

20240521bf838e8ca2f12d922652714032ac8fb0cryptolocker.exe
Size

95KB
MD5

bf838e8ca2f12d922652714032ac8fb0
SHA1

3e022a2ecb674f02644b73e7d0b876399bee7e71
SHA256

ee8a26d3cf4927ecdb9dc74a57b2a67cc7a1bc306fd73d7dd5bba09a910ed139
SHA512

6d5bd5244f3d7046838b16a82212a9d6fe1543c0586f000749318c2c3b2ef9274942c0d71fef8e3739386b92c45a5abb7c3c3ac73f9a1e218f4c565caac28982
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp0+h:AnBdOOtEvwDpj6zG

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2608 asih.exe
Loads dropped DLL 1 IoCs

Processes:

20240521bf838e8ca2f12d922652714032ac8fb0cryptolocker.exe

pid process

2368 20240521bf838e8ca2f12d922652714032ac8fb0cryptolocker.exe

pid	process
2608	asih.exe

pid	process
2368	20240521bf838e8ca2f12d922652714032ac8fb0cryptolocker.exe

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2368-8-0x0000000000500000-0x000000000050F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2608-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2608-26-0x0000000000500000-0x000000000050F000-memory.dmp	upx

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

20240521bf838e8ca2f12d922652714032ac8fb0cryptolocker.exe

description	pid	process	target process
PID 2368 wrote to memory of 2608	2368	20240521bf838e8ca2f12d922652714032ac8fb0cryptolocker.exe	asih.exe
PID 2368 wrote to memory of 2608	2368	20240521bf838e8ca2f12d922652714032ac8fb0cryptolocker.exe	asih.exe
PID 2368 wrote to memory of 2608	2368	20240521bf838e8ca2f12d922652714032ac8fb0cryptolocker.exe	asih.exe
PID 2368 wrote to memory of 2608	2368	20240521bf838e8ca2f12d922652714032ac8fb0cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\20240521bf838e8ca2f12d922652714032ac8fb0cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\20240521bf838e8ca2f12d922652714032ac8fb0cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2368

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2608

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
95KB

MD5
fdb7fb998e8efbfa10b7916dfffcf378

SHA1
a2597e8be424f5ce205a50facfdead0ccda88a41

SHA256
6f343d08c87ad7f273aa7f67a97198d6b0fa491bd14e1205c1977308a1bb3f8e

SHA512
9139a7e609f3ad047ec6430aefef85c8a7e34833274d22c459bc7718156f38bd39eb2e6d0865d36487b25be37354a3a7834c3559f3dae92bc676e2f116419cb7

Download Submit
memory/2368-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2368-1-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2368-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2368-8-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2608-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2608-18-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2608-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2608-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download