7a7ad42b177dac2bc6b78249b7cf0f61df38492c7dc1954b9f5c27b29887fd39

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/01/2024, 10:03

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

651caf951043a1421ebebcc6de35bf9b.exe
Size

67KB
MD5

651caf951043a1421ebebcc6de35bf9b
SHA1

97a210de6ec53ef6da50626f3de4b7ec9d33e3e0
SHA256

7a7ad42b177dac2bc6b78249b7cf0f61df38492c7dc1954b9f5c27b29887fd39
SHA512

18362cdcced8ea951d96f8c69b36af8d264504c501bdc8d3f7e171faf04c5f25b09d54ca17e6fd4a038c1f4d1f68aba20a1999c425049d0b1ea0de708843613d
SSDEEP

1536:SoITrWmbHjz5s+Y5BkmPxPBxAU/bwrD0rTBV0ro:JWPH/5s7+g9z/W0Dl

Score

7^/10

persistence upx

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
2596	651caf951043a1421ebebcc6de35bf9b.exe
3528	rundll32.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2596-1-0x0000000000400000-0x0000000000413000-memory.dmp	upx
behavioral2/memory/2596-3-0x0000000000400000-0x0000000000413000-memory.dmp	upx
behavioral2/memory/2596-4-0x0000000000400000-0x0000000000413000-memory.dmp	upx
behavioral2/memory/2596-10-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/2596-12-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/2596-18-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/3528-32-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/3528-33-0x0000000010000000-0x0000000010014000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSServer = "rundll32.exe C:\\Windows\\system32\\awtrQKdC.dll,#1"	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\byXOeETj.dll	651caf951043a1421ebebcc6de35bf9b.exe
File created	C:\Windows\SysWOW64\byXOeETj.dll	651caf951043a1421ebebcc6de35bf9b.exe
File created	C:\Windows\SysWOW64\awtrQKdC.dll	651caf951043a1421ebebcc6de35bf9b.exe
File opened for modification	C:\Windows\SysWOW64\awtrQKdC.dll	651caf951043a1421ebebcc6de35bf9b.exe

Modifies registry class 4 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{309311F1-8F50-452E-A98D-69AFD7A34AA8}\InprocServer32\ThreadingModel = "Both"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{309311F1-8F50-452E-A98D-69AFD7A34AA8}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{309311F1-8F50-452E-A98D-69AFD7A34AA8}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{309311F1-8F50-452E-A98D-69AFD7A34AA8}\InprocServer32\ = "C:\\Windows\\SysWow64\\awtrQKdC.dll"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2596	651caf951043a1421ebebcc6de35bf9b.exe
2596	651caf951043a1421ebebcc6de35bf9b.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe
3528	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2596	651caf951043a1421ebebcc6de35bf9b.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2596	651caf951043a1421ebebcc6de35bf9b.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2596 wrote to memory of 624	2596	651caf951043a1421ebebcc6de35bf9b.exe	5
PID 2596 wrote to memory of 3528	2596	651caf951043a1421ebebcc6de35bf9b.exe	96
PID 2596 wrote to memory of 3528	2596	651caf951043a1421ebebcc6de35bf9b.exe	96
PID 2596 wrote to memory of 3528	2596	651caf951043a1421ebebcc6de35bf9b.exe	96
PID 2596 wrote to memory of 3704	2596	651caf951043a1421ebebcc6de35bf9b.exe	97
PID 2596 wrote to memory of 3704	2596	651caf951043a1421ebebcc6de35bf9b.exe	97
PID 2596 wrote to memory of 3704	2596	651caf951043a1421ebebcc6de35bf9b.exe	97

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:624

C:\Users\Admin\AppData\Local\Temp\651caf951043a1421ebebcc6de35bf9b.exe
"C:\Users\Admin\AppData\Local\Temp\651caf951043a1421ebebcc6de35bf9b.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2596
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Windows\system32\awtrQKdC.dll,a
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  PID:3528
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\removalfile.bat "C:\Users\Admin\AppData\Local\Temp\651caf951043a1421ebebcc6de35bf9b.exe"
  2⤵
  PID:3704

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
43B

MD5
9a7ef09167a6f4433681b94351509043

SHA1
259b1375ed8e84943ca1d42646bb416325c89e12

SHA256
d5739a0510d89da572eb0b0d394d4fb4dd361cd9ee0144b9b31c590df93c3be7

SHA512
96b84cd88a0e4b7c1122af3ed6ce5edf0a9a4e9bf79575eadfac16b2c46f1278d57755d29f21d7c6dcb4403be24b7ac7da4837c6cc9c602342a8f2b8e54883df

Download Submit
C:\Windows\SysWOW64\byXOeETj.dll

Filesize
41KB

MD5
f48170ea41e051683b0529e194a6cfe2

SHA1
6cadc67dff6bbf42326f34bcb9482e3912a49a8a

SHA256
0cbc202c07951399a7cd425db1d20966375b85d56d0a96c88a20e0ba4592ad6a

SHA512
804b4c91f6e11618966441479388a6fcfa609dffb67ec5c4c4c87ebd4951b16463015b56ea9466f9f4de9fe2e503219787c23aefda72c49a39a4b197dc826276

Download Submit
memory/2596-3-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2596-0-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2596-4-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/2596-10-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/2596-2-0x0000000002160000-0x000000000216E000-memory.dmp

Filesize
56KB

Download
memory/2596-12-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/2596-13-0x0000000002BB0000-0x0000000002BB8000-memory.dmp

Filesize
32KB

Download
memory/2596-18-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/2596-23-0x0000000002BB0000-0x0000000002BB8000-memory.dmp

Filesize
32KB

Download
memory/2596-1-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/3528-32-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/3528-33-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download