6822a63856e3199e9635640d448844db2da11daec50f239d461e9832050a1bd0

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 19:03

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General

Target

20240521871b5515c64891358b210eb49a0c2d7fcryptolocker.exe
Size

24KB
MD5

871b5515c64891358b210eb49a0c2d7f
SHA1

c59d23940a15b90bf00167c2d5dfea2f18a540d7
SHA256

6822a63856e3199e9635640d448844db2da11daec50f239d461e9832050a1bd0
SHA512

109a315fd6d14e0aeb3a91f8950ac4622a167ec6a7e9ce72332f601dff2ea365df4cc891ed9e32ed2377f4b7cb01ffbfbfc7ef76427024b0f069dbb06496f2df
SSDEEP

384:bVCPwFRuFn65arz1ZhdaXFXSCVQTLfjDp6HMJ23/:bVCPwFRo6CpwXFXSqQXfjAsJ+/

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

hasfj.exe

pid process

1408 hasfj.exe
Loads dropped DLL 1 IoCs

Processes:

20240521871b5515c64891358b210eb49a0c2d7fcryptolocker.exe

pid process

1948 20240521871b5515c64891358b210eb49a0c2d7fcryptolocker.exe

pid	process
1408	hasfj.exe

pid	process
1948	20240521871b5515c64891358b210eb49a0c2d7fcryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1948-1-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/memory/1948-15-0x0000000008000000-0x000000000800E000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\hasfj.exe	upx
behavioral1/memory/1408-17-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral1/memory/1408-27-0x0000000008000000-0x000000000800E000-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:

20240521871b5515c64891358b210eb49a0c2d7fcryptolocker.exe

description	pid	process	target process
PID 1948 wrote to memory of 1408	1948	20240521871b5515c64891358b210eb49a0c2d7fcryptolocker.exe	hasfj.exe
PID 1948 wrote to memory of 1408	1948	20240521871b5515c64891358b210eb49a0c2d7fcryptolocker.exe	hasfj.exe
PID 1948 wrote to memory of 1408	1948	20240521871b5515c64891358b210eb49a0c2d7fcryptolocker.exe	hasfj.exe
PID 1948 wrote to memory of 1408	1948	20240521871b5515c64891358b210eb49a0c2d7fcryptolocker.exe	hasfj.exe

C:\Users\Admin\AppData\Local\Temp\20240521871b5515c64891358b210eb49a0c2d7fcryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\20240521871b5515c64891358b210eb49a0c2d7fcryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1948
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1408

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\hasfj.exe

Filesize
24KB

MD5
a0d35a82a4bb35cf29e628a9769df14a

SHA1
c02248acb5f42202dfaa571a7db03668952253b5

SHA256
b4657fa44bde897c0f16ec83b6bd54c3101b9581fac8a5a37a1c6b956c390dae

SHA512
2d82d27bcc2b1c71071d3b78da16cb88c3682ee7fde71c79abb3c1a89ed52432ddf976cead237c381afae2c4f61d25f35ed2d5b8a55f53eba6e2fd4559d96e26

Download Submit
memory/1408-17-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/1408-19-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/1408-26-0x0000000000410000-0x0000000000416000-memory.dmp

Filesize
24KB

Download
memory/1408-27-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/1948-1-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/1948-0-0x0000000001CA0000-0x0000000001CA6000-memory.dmp

Filesize
24KB

Download
memory/1948-2-0x0000000001CF0000-0x0000000001CF6000-memory.dmp

Filesize
24KB

Download
memory/1948-9-0x0000000001CA0000-0x0000000001CA6000-memory.dmp

Filesize
24KB

Download
memory/1948-15-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download