9c078ebbed5101df2b70d5b06e98a5749608bb433eb95f1d98dabbe745414691

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
24-05-2024 04:22

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General

Target

2024-05-24_04ddfc65bceaacb93b77fda9cd150517_cryptolocker.exe
Size

41KB
MD5

04ddfc65bceaacb93b77fda9cd150517
SHA1

b3864b7de41b2d6d81ba4b34480a398c9e82f111
SHA256

9c078ebbed5101df2b70d5b06e98a5749608bb433eb95f1d98dabbe745414691
SHA512

8a7552224fde0dc8a97d6332dce26c5a9d6e2b16b91bf17ea37c63913f79e99b976176d26b9d7d146b479a94381603267f035c381295cc8ea88d8c38435c3b18
SSDEEP

384:ba74uGLLQRcsdeQ72ngEr4K7YmE8j6CQYnrz1ZhdaXFXSCVQTLfjDpXqxKH1x:ba74zYcgT/EkdCQgpwXFXSqQXfj0xKVx

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2128-0-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\hasfj.exe	CryptoLocker_rule2
behavioral1/memory/2128-15-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2976-16-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2976-26-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2128-0-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\hasfj.exe	UPX
behavioral1/memory/2128-15-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral1/memory/2976-16-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral1/memory/2976-26-0x0000000008000000-0x000000000800F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

hasfj.exe

pid process

2976 hasfj.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-24_04ddfc65bceaacb93b77fda9cd150517_cryptolocker.exe

pid process

2128 2024-05-24_04ddfc65bceaacb93b77fda9cd150517_cryptolocker.exe

pid	process
2976	hasfj.exe

pid	process
2128	2024-05-24_04ddfc65bceaacb93b77fda9cd150517_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2128-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\hasfj.exe	upx
behavioral1/memory/2128-15-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2976-16-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral1/memory/2976-26-0x0000000008000000-0x000000000800F000-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

Processes:

2024-05-24_04ddfc65bceaacb93b77fda9cd150517_cryptolocker.exe

description	pid	process	target process
PID 2128 wrote to memory of 2976	2128	2024-05-24_04ddfc65bceaacb93b77fda9cd150517_cryptolocker.exe	hasfj.exe
PID 2128 wrote to memory of 2976	2128	2024-05-24_04ddfc65bceaacb93b77fda9cd150517_cryptolocker.exe	hasfj.exe
PID 2128 wrote to memory of 2976	2128	2024-05-24_04ddfc65bceaacb93b77fda9cd150517_cryptolocker.exe	hasfj.exe
PID 2128 wrote to memory of 2976	2128	2024-05-24_04ddfc65bceaacb93b77fda9cd150517_cryptolocker.exe	hasfj.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-24_04ddfc65bceaacb93b77fda9cd150517_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_04ddfc65bceaacb93b77fda9cd150517_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2976

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\hasfj.exe

Filesize
41KB

MD5
6342d03015bcba90028f472b76513286

SHA1
166658dd8dc192aa2f0ef880bd9882799ba039c6

SHA256
f2c23b893821479e8dbd7ca1a4484e2e25e3f0c2f241a048a2444fe86f9c0fca

SHA512
e56cdc5c91a9d079ae3888dd38c27465c92fd74a5ab595ce9d816435021e8abe5179d05b61e559d24e27fc204af8cf42e6497f1ffe608eb3fa8e48a5369fad01

Download Submit
memory/2128-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2128-1-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2128-2-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2128-9-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2128-15-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2976-25-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/2976-18-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2976-16-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2976-26-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download