2b6f1415bd3c4cdef7e534d8d2be6c6b2b7120037c4eb196bb180c3be38b833d

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 05:41

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General

Target

20240521fa6dd17406c94593b4b05bc418f91c0fcryptolocker.exe
Size

39KB
MD5

fa6dd17406c94593b4b05bc418f91c0f
SHA1

0b3ba406dcb2e69cd74945dda455dd1e99b0c222
SHA256

2b6f1415bd3c4cdef7e534d8d2be6c6b2b7120037c4eb196bb180c3be38b833d
SHA512

ddc1794483a2e74358f691f856bef2c59029ee7e045bd9b43a6a2c266806595d4318a7fe82170fb5477aff33c3d427f094d1a5fa19a86cdf78916d6b5bb36cc5
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYan8j:qDdFJy3QMOtEvwDpjjWMl7Tdn8j

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2056	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2220	20240521fa6dd17406c94593b4b05bc418f91c0fcryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b000000014230-11.dat	upx
behavioral1/memory/2220-13-0x0000000001D60000-0x0000000001D70000-memory.dmp	upx
behavioral1/memory/2220-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2056-27-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 2056	2220	20240521fa6dd17406c94593b4b05bc418f91c0fcryptolocker.exe	28
PID 2220 wrote to memory of 2056	2220	20240521fa6dd17406c94593b4b05bc418f91c0fcryptolocker.exe	28
PID 2220 wrote to memory of 2056	2220	20240521fa6dd17406c94593b4b05bc418f91c0fcryptolocker.exe	28
PID 2220 wrote to memory of 2056	2220	20240521fa6dd17406c94593b4b05bc418f91c0fcryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\20240521fa6dd17406c94593b4b05bc418f91c0fcryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\20240521fa6dd17406c94593b4b05bc418f91c0fcryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2056

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
40KB

MD5
187743b5ab26aacd3eeedabda4709327

SHA1
504c3fe8f758ee74ec4446a456f39b21ca240fa2

SHA256
101f21a689993a3144413afd2fe439bc5d2d5b825330eb8791ed2aa24f3eace1

SHA512
2d5adc4e9a549e99b239cd3e4ce4fe4f54245965413f6bf81041170b64fe0f7a01948f0d97144aa9c2d24ad932fe8a6593e65c22c4104b84bbcc43a193499938

Download Submit
memory/2056-19-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2056-26-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/2056-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2220-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2220-2-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2220-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2220-13-0x0000000001D60000-0x0000000001D70000-memory.dmp

Filesize
64KB

Download
memory/2220-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download