c89efb1d58ba125d6afff7891d6da684fea7c95cc697708b6958c407d758681f

Analysis

max time kernel
202s
max time network
213s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
03/12/2022, 08:45

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General

Target

c89efb1d58ba125d6afff7891d6da684fea7c95cc697708b6958c407d758681f.exe
Size

7.0MB
MD5

96a1999f5291d76281f02411a71c432a
SHA1

06e0ef4ef8b7af1201cbf5aae981639363b71590
SHA256

c89efb1d58ba125d6afff7891d6da684fea7c95cc697708b6958c407d758681f
SHA512

e25e0c3f9080e7b9d9f0ba7480e736bc57256645a318b089778c1950fea67dbeac59650e723bfa23a7539a3b71fa3d2e2b00dc9e7b5c342a8c9e138ee8846ebb
SSDEEP

196608:ba987PJHArOqVD+vTpwCaq7zspvTXgMy5cw8:zPWrfVD+bpwCDvs9XgMY8

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
behavioral2/memory/1660-132-0x0000000000400000-0x000000000040D000-memory.dmp	upx
behavioral2/memory/1660-137-0x0000000000400000-0x000000000040D000-memory.dmp	upx

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\008.JPG	c89efb1d58ba125d6afff7891d6da684fea7c95cc697708b6958c407d758681f.exe
File opened for modification	C:\Windows\SysWOW64\El mejorrr!.exe	c89efb1d58ba125d6afff7891d6da684fea7c95cc697708b6958c407d758681f.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 SetWindowsHookEx 1 IoCs

pid	Process
1660	c89efb1d58ba125d6afff7891d6da684fea7c95cc697708b6958c407d758681f.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1660 wrote to memory of 3128	1660	c89efb1d58ba125d6afff7891d6da684fea7c95cc697708b6958c407d758681f.exe	81
PID 1660 wrote to memory of 3128	1660	c89efb1d58ba125d6afff7891d6da684fea7c95cc697708b6958c407d758681f.exe	81
PID 1660 wrote to memory of 3128	1660	c89efb1d58ba125d6afff7891d6da684fea7c95cc697708b6958c407d758681f.exe	81
PID 1660 wrote to memory of 3840	1660	c89efb1d58ba125d6afff7891d6da684fea7c95cc697708b6958c407d758681f.exe	83
PID 1660 wrote to memory of 3840	1660	c89efb1d58ba125d6afff7891d6da684fea7c95cc697708b6958c407d758681f.exe	83
PID 1660 wrote to memory of 3840	1660	c89efb1d58ba125d6afff7891d6da684fea7c95cc697708b6958c407d758681f.exe	83

C:\Users\Admin\AppData\Local\Temp\c89efb1d58ba125d6afff7891d6da684fea7c95cc697708b6958c407d758681f.exe
"C:\Users\Admin\AppData\Local\Temp\c89efb1d58ba125d6afff7891d6da684fea7c95cc697708b6958c407d758681f.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1660
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c start C:\Windows\System32\008.JPG
  2⤵
  PID:3128
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c start C:\Windows\System32\El mejorrr!.exe
  2⤵
  PID:3840

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

memory/1660-132-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/1660-137-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download