3a7109b4f6636c4b87a67f05b1c094581e92a7093da45266f33812e513d73cd8

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
07-01-2024 12:07

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General

Target

2024-01-06_339adab02530e6b74b3e2d1b910c9db2_cryptolocker.exe
Size

57KB
MD5

339adab02530e6b74b3e2d1b910c9db2
SHA1

12f493e8f0157a29d7c5ad9a7c87f768c246042c
SHA256

3a7109b4f6636c4b87a67f05b1c094581e92a7093da45266f33812e513d73cd8
SHA512

52dbef3361e4265513de70eb7230f01bc2e8536d35bf31b2e0f75e28944faab73f4005c186aa9f37b4e9fb7f736171c68569081a43154acf6cf983614cc3ff34
SSDEEP

768:T6LsoEEeegiZPvEhHSG+gkum/kLyMro2GtOOtEvwDpjhXMLamkc8JF:T6QFElP6n+gxmddpMOtEvwDpjwa3b

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2676	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1896	2024-01-06_339adab02530e6b74b3e2d1b910c9db2_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1896-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b000000012251-11.dat	upx
behavioral1/memory/1896-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2676-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2676-26-0x0000000000500000-0x0000000000510000-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 1896 wrote to memory of 2676	1896	2024-01-06_339adab02530e6b74b3e2d1b910c9db2_cryptolocker.exe	28
PID 1896 wrote to memory of 2676	1896	2024-01-06_339adab02530e6b74b3e2d1b910c9db2_cryptolocker.exe	28
PID 1896 wrote to memory of 2676	1896	2024-01-06_339adab02530e6b74b3e2d1b910c9db2_cryptolocker.exe	28
PID 1896 wrote to memory of 2676	1896	2024-01-06_339adab02530e6b74b3e2d1b910c9db2_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-06_339adab02530e6b74b3e2d1b910c9db2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-06_339adab02530e6b74b3e2d1b910c9db2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1896
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2676

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
57KB

MD5
124d2475d1c3be11c9713c4e27bac2a1

SHA1
7a65261ad1b9cf5b2d84967216bd805f9b8c464b

SHA256
b154b4b900398c6b05462cd1a9fab59412138db2aa9f801fe7c90dae9e8718a7

SHA512
d252759b9ed6067cad170418aaf9a9e8875ea313ca04787ebebdada5aa4565991a5e2af5f7c60170536aa5abd309d052339d04c544a3129e5d42210c4f1cb436

Download Submit
memory/1896-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1896-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1896-3-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1896-2-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/1896-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2676-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2676-19-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2676-18-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2676-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download