c4dbd85641159159831006714fd004d6b9db4c1bd4be1b84679cf6501725e978

Analysis

max time kernel
0s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
05/06/2024, 03:51

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General

Target

2024-06-05_d100d2161c915989f59ff9b0c4106290_cryptolocker.exe
Size

52KB
MD5

d100d2161c915989f59ff9b0c4106290
SHA1

4a0f7dacf55e36199ca3b16d525cd1bdb512e7d8
SHA256

c4dbd85641159159831006714fd004d6b9db4c1bd4be1b84679cf6501725e978
SHA512

dc8509416f13eb6ffb6e8dbd804a2bb5c366c71b841b5851f435eb3a5f71e79d81444f3571149225c27d34691fa99f59c8468bde7dd1ded6be8019986b4d24be
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0S16avdrQFiLjJvtOe:bODOw9acifAoc+vx

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001226d-23.dat	CryptoLocker_rule2
behavioral1/memory/2612-15-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2180-8-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2612-25-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001226d-23.dat	UPX
behavioral1/memory/2612-15-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral1/memory/2180-8-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral1/memory/2612-25-0x0000000008000000-0x000000000800F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2612	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
2180	2024-06-05_d100d2161c915989f59ff9b0c4106290_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000b00000001226d-23.dat	upx
behavioral1/memory/2612-15-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2180-8-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2612-25-0x0000000008000000-0x000000000800F000-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 2180 wrote to memory of 2612	2180	2024-06-05_d100d2161c915989f59ff9b0c4106290_cryptolocker.exe	28
PID 2180 wrote to memory of 2612	2180	2024-06-05_d100d2161c915989f59ff9b0c4106290_cryptolocker.exe	28
PID 2180 wrote to memory of 2612	2180	2024-06-05_d100d2161c915989f59ff9b0c4106290_cryptolocker.exe	28
PID 2180 wrote to memory of 2612	2180	2024-06-05_d100d2161c915989f59ff9b0c4106290_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-05_d100d2161c915989f59ff9b0c4106290_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-05_d100d2161c915989f59ff9b0c4106290_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2180
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2612

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

C:\Users\Admin\AppData\Local\Temp\lossy.exe

Filesize
53KB

MD5
8e9f497fbb3272df3bb08d55a12c6dbd

SHA1
090168b57eac1316f106de009a9a1207939b464d

SHA256
0cf6342b3e7dd9c88a3916795898554f0f7dc4429c60360cead0cdaec189a250

SHA512
d6f42fa4b735688a9a5a13a61646b5e6faa9eaa4acc97b25f30835e34f3aaf54415e735f8d89cbcd1c261c264dee808b1647ca2585419ac32543598e9ca856b3

Download Submit
memory/2180-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2180-8-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2180-1-0x0000000000210000-0x0000000000216000-memory.dmp

Filesize
24KB

Download
memory/2180-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2612-24-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2612-17-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2612-15-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2612-25-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download