f3a7996d7f0212d50516511e771e56d6205b8d25b038220eace34f31ef65ed0c

General

Target

f3a7996d7f0212d50516511e771e56d6205b8d25b038220eace34f31ef65ed0c.exe
Size

107KB
MD5

0c41f02a23cc81c2b009d7770ebf9941
SHA1

584a016eed90cc94bc47fb54cc85caff8bf6b70a
SHA256

f3a7996d7f0212d50516511e771e56d6205b8d25b038220eace34f31ef65ed0c
SHA512

e03d193211e44570b168f8641a5968e508fff02575556e35078500e67995d025d4bb369226b893504684b00212ba61ad1e15b174c804bb528b9ff33166acd8e6
SSDEEP

3072:iiDfmqcCuCPmjlkRFYocPVdHfQn0Ycs7yq:HDuqcIPm5kRgNdH40Yccyq

Score

8^/10

persistence upx

Malware Config

Signatures

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1644-55-0x0000000000400000-0x0000000000478000-memory.dmp	upx
behavioral1/memory/1644-57-0x0000000000400000-0x0000000000478000-memory.dmp	upx
behavioral1/memory/1644-58-0x0000000000400000-0x0000000000478000-memory.dmp	upx
behavioral1/memory/1644-63-0x0000000000400000-0x0000000000478000-memory.dmp	upx
behavioral1/memory/1644-64-0x0000000000400000-0x0000000000478000-memory.dmp	upx
behavioral1/memory/1644-65-0x0000000000400000-0x0000000000478000-memory.dmp	upx
behavioral1/memory/1644-67-0x0000000000400000-0x0000000000478000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VideoDrivers = "C:\\Windows\\system32\\winldsr.exe"	f3a7996d7f0212d50516511e771e56d6205b8d25b038220eace34f31ef65ed0c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	f3a7996d7f0212d50516511e771e56d6205b8d25b038220eace34f31ef65ed0c.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\System32\winldsr.exe	f3a7996d7f0212d50516511e771e56d6205b8d25b038220eace34f31ef65ed0c.exe
File opened for modification	C:\Windows\SysWOW64\winldsr.exe	f3a7996d7f0212d50516511e771e56d6205b8d25b038220eace34f31ef65ed0c.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1672 set thread context of 1644	1672	f3a7996d7f0212d50516511e771e56d6205b8d25b038220eace34f31ef65ed0c.exe	27

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 FindShellTrayWindow 1 IoCs

pid	Process
1644	f3a7996d7f0212d50516511e771e56d6205b8d25b038220eace34f31ef65ed0c.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1672 wrote to memory of 1644	1672	f3a7996d7f0212d50516511e771e56d6205b8d25b038220eace34f31ef65ed0c.exe	27
PID 1672 wrote to memory of 1644	1672	f3a7996d7f0212d50516511e771e56d6205b8d25b038220eace34f31ef65ed0c.exe	27
PID 1672 wrote to memory of 1644	1672	f3a7996d7f0212d50516511e771e56d6205b8d25b038220eace34f31ef65ed0c.exe	27
PID 1672 wrote to memory of 1644	1672	f3a7996d7f0212d50516511e771e56d6205b8d25b038220eace34f31ef65ed0c.exe	27
PID 1672 wrote to memory of 1644	1672	f3a7996d7f0212d50516511e771e56d6205b8d25b038220eace34f31ef65ed0c.exe	27
PID 1672 wrote to memory of 1644	1672	f3a7996d7f0212d50516511e771e56d6205b8d25b038220eace34f31ef65ed0c.exe	27
PID 1672 wrote to memory of 1644	1672	f3a7996d7f0212d50516511e771e56d6205b8d25b038220eace34f31ef65ed0c.exe	27
PID 1672 wrote to memory of 1644	1672	f3a7996d7f0212d50516511e771e56d6205b8d25b038220eace34f31ef65ed0c.exe	27

C:\Users\Admin\AppData\Local\Temp\f3a7996d7f0212d50516511e771e56d6205b8d25b038220eace34f31ef65ed0c.exe
"C:\Users\Admin\AppData\Local\Temp\f3a7996d7f0212d50516511e771e56d6205b8d25b038220eace34f31ef65ed0c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1672
- C:\Users\Admin\AppData\Local\Temp\f3a7996d7f0212d50516511e771e56d6205b8d25b038220eace34f31ef65ed0c.exe
  "C:\Users\Admin\AppData\Local\Temp\f3a7996d7f0212d50516511e771e56d6205b8d25b038220eace34f31ef65ed0c.exe"
  2⤵
  - Adds Run key to start application
  - Drops file in System32 directory
  - Suspicious use of FindShellTrayWindow
  PID:1644

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1644-54-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1644-55-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1644-57-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1644-58-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1644-61-0x0000000075BD1000-0x0000000075BD3000-memory.dmp

Filesize
8KB

Download
memory/1644-63-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1644-64-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1644-65-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1644-66-0x00000000748A1000-0x00000000748A3000-memory.dmp

Filesize
8KB

Download
memory/1644-67-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1672-62-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download

Analysis

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