bcf9ee8fc7d57483d40c4d61a0b3d9379afb43a71a51d1f5032d5e2859b01d43

Analysis

max time kernel
35s
max time network
42s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
19-09-2022 17:01

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General

Target

bcf9ee8fc7d57483d40c4d61a0b3d9379afb43a71a51d1f5032d5e2859b01d43.exe
Size

93KB
MD5

167dfd151823f400c1b2f7758e2c806b
SHA1

1a80f630b52d65028ad5559f61f13cb3fa3378aa
SHA256

bcf9ee8fc7d57483d40c4d61a0b3d9379afb43a71a51d1f5032d5e2859b01d43
SHA512

d84b8b64f810bb1e3ebc46f091724426974e2dd13298695f7c01908aee8830a6f3fe70ca79fd53aca2002d4c336f318dcb13249947764873d5437f1afd5b74fd
SSDEEP

1536:fW52jejsV8ebbsFMaumGg5cyUnpAC82NVueEM5crVO6TjP/fIg:e5YemHYJuLRnpACh35QVOUr

Score

8^/10

upx

Malware Config

Signatures

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1608-55-0x0000000000400000-0x0000000000471000-memory.dmp	upx
behavioral1/memory/1608-57-0x0000000000400000-0x0000000000471000-memory.dmp	upx

Deletes itself 1 IoCs

pid	Process
1768	cmd.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1608 wrote to memory of 1768	1608	bcf9ee8fc7d57483d40c4d61a0b3d9379afb43a71a51d1f5032d5e2859b01d43.exe	28
PID 1608 wrote to memory of 1768	1608	bcf9ee8fc7d57483d40c4d61a0b3d9379afb43a71a51d1f5032d5e2859b01d43.exe	28
PID 1608 wrote to memory of 1768	1608	bcf9ee8fc7d57483d40c4d61a0b3d9379afb43a71a51d1f5032d5e2859b01d43.exe	28
PID 1608 wrote to memory of 1768	1608	bcf9ee8fc7d57483d40c4d61a0b3d9379afb43a71a51d1f5032d5e2859b01d43.exe	28

C:\Users\Admin\AppData\Local\Temp\bcf9ee8fc7d57483d40c4d61a0b3d9379afb43a71a51d1f5032d5e2859b01d43.exe
"C:\Users\Admin\AppData\Local\Temp\bcf9ee8fc7d57483d40c4d61a0b3d9379afb43a71a51d1f5032d5e2859b01d43.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1608
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /q /c "C:\Users\Admin\AppData\Local\Temp\a..bat" > nul 2> nul
  2⤵
  - Deletes itself
  PID:1768

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\a..bat

Filesize
274B

MD5
253d0826458d27eea5be794986717f33

SHA1
4d32f3a43fa51a6a067e06cf13d305027c4ec445

SHA256
c7d79df2175f66b447842f26e5d8790edf5666c5d4f13ed4f4835fbffe6021d9

SHA512
6cb17d24635049cd74941aaa7efa73ba0ad9768a6148cd8c2a82dd90de3a1d8fc16b8d4963e93ad3d2a8cee5d215fe3ebfa5952e0f45ca10ce83865990db8c29

Download Submit
memory/1608-54-0x0000000075A91000-0x0000000075A93000-memory.dmp

Filesize
8KB

Download
memory/1608-55-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/1608-57-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/1768-56-0x0000000000000000-mapping.dmp

Download