ff25be8551a1bfe8c2de9f35f7b1d062fd12935e3c5389377194c939991bea34

Analysis

max time kernel
142s
max time network
171s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
10-01-2024 05:55

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General

Target

2024-01-09_6f7382331c88298366e93ca573130048_cryptolocker.exe
Size

69KB
MD5

6f7382331c88298366e93ca573130048
SHA1

13250493dc0fade0c24584fbd40b6d20a22cafbd
SHA256

ff25be8551a1bfe8c2de9f35f7b1d062fd12935e3c5389377194c939991bea34
SHA512

9f95195fa3985ffc2b39d36d9bc2a9de23e42f44d410b264bae477b46865ce39b5d7e759ad258c12900c45c0165f454a45217ef9cd2e8e9d443538d8f914d2e5
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsale26:1nK6a+qdOOtEvwDpjJ

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2840	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2680	2024-01-09_6f7382331c88298366e93ca573130048_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2680-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x000a000000012266-11.dat	upx
behavioral1/memory/2840-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2680-15-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2840-26-0x0000000000500000-0x000000000050F311-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 2680 wrote to memory of 2840	2680	2024-01-09_6f7382331c88298366e93ca573130048_cryptolocker.exe	27
PID 2680 wrote to memory of 2840	2680	2024-01-09_6f7382331c88298366e93ca573130048_cryptolocker.exe	27
PID 2680 wrote to memory of 2840	2680	2024-01-09_6f7382331c88298366e93ca573130048_cryptolocker.exe	27
PID 2680 wrote to memory of 2840	2680	2024-01-09_6f7382331c88298366e93ca573130048_cryptolocker.exe	27

C:\Users\Admin\AppData\Local\Temp\2024-01-09_6f7382331c88298366e93ca573130048_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-09_6f7382331c88298366e93ca573130048_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2680
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2840

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
70KB

MD5
f71d36a9c15f8d4532611c5a99b9e771

SHA1
abbb9fff75b8661dfccb2e4486f659fcfff694fb

SHA256
e306fc25db3fcded2c87bc886a12e2265142ba94db4cc572a5bfd784323f4d24

SHA512
47abed0551ffff9c88d239e29425ed39f73730f9944e11ba03c636f4194187f07ce54e4d71a4665e1c7ff893c9467362a6dab2f974d654b1a7ce9a0b1f276671

Download Submit
memory/2680-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2680-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2680-3-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2680-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2680-15-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2680-14-0x00000000026C0000-0x00000000026D0000-memory.dmp

Filesize
64KB

Download
memory/2840-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2840-19-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2840-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download