eece1e9c38aada847fcf97757865b20f1be4168e05fd97424ecbf1e92141e201

Analysis

max time kernel
151s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30/12/2023, 01:33

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General

Target

0a2e0704a26d489b1b6549dc82f2d805.exe
Size

39KB
MD5

0a2e0704a26d489b1b6549dc82f2d805
SHA1

ead7c2b3fe6407d4c967c3174d10095c5766bad9
SHA256

eece1e9c38aada847fcf97757865b20f1be4168e05fd97424ecbf1e92141e201
SHA512

2a0ab34b24acf1a595ff1f7dc9e1097e8160d8c7e57cbfff77f6794c6fc3e3be1d3f7f92fae11dc7a6cd0f786f5d38eb27c4119722c2e738cac3e18acf20d4cf
SSDEEP

768:afr6USD789dee7YBI5QXsltGWKNmMBWIYPn8:afOUSD7M7lE50MQn8

Score

7^/10

persistence upx

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
4124	0a2e0704a26d489b1b6549dc82f2d805.exe
4128	rundll32.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4124-1-0x0000000000400000-0x0000000000410F37-memory.dmp	upx
behavioral2/memory/4124-2-0x0000000000400000-0x0000000000410F37-memory.dmp	upx
behavioral2/memory/4124-4-0x0000000000400000-0x0000000000410F37-memory.dmp	upx
behavioral2/memory/4124-10-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/4124-11-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/4124-12-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/4124-18-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/4128-30-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/4128-32-0x0000000010000000-0x0000000010014000-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\\khfGwTnk.dll,#1"	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\urqPiJAR.dll	0a2e0704a26d489b1b6549dc82f2d805.exe
File created	C:\Windows\SysWOW64\urqPiJAR.dll	0a2e0704a26d489b1b6549dc82f2d805.exe
File created	C:\Windows\SysWOW64\khfGwTnk.dll	0a2e0704a26d489b1b6549dc82f2d805.exe
File opened for modification	C:\Windows\SysWOW64\khfGwTnk.dll	0a2e0704a26d489b1b6549dc82f2d805.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DABB1C43-1596-49C4-9E4D-51AE7A1518BB}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DABB1C43-1596-49C4-9E4D-51AE7A1518BB}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DABB1C43-1596-49C4-9E4D-51AE7A1518BB}\InprocServer32\ = "C:\\Windows\\SysWow64\\khfGwTnk.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{DABB1C43-1596-49C4-9E4D-51AE7A1518BB}\InprocServer32\ThreadingModel = "Both"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4124	0a2e0704a26d489b1b6549dc82f2d805.exe
4124	0a2e0704a26d489b1b6549dc82f2d805.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe
4128	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4124	0a2e0704a26d489b1b6549dc82f2d805.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4124	0a2e0704a26d489b1b6549dc82f2d805.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4124 wrote to memory of 624	4124	0a2e0704a26d489b1b6549dc82f2d805.exe	4
PID 4124 wrote to memory of 4128	4124	0a2e0704a26d489b1b6549dc82f2d805.exe	98
PID 4124 wrote to memory of 4128	4124	0a2e0704a26d489b1b6549dc82f2d805.exe	98
PID 4124 wrote to memory of 4128	4124	0a2e0704a26d489b1b6549dc82f2d805.exe	98
PID 4124 wrote to memory of 3520	4124	0a2e0704a26d489b1b6549dc82f2d805.exe	100
PID 4124 wrote to memory of 3520	4124	0a2e0704a26d489b1b6549dc82f2d805.exe	100
PID 4124 wrote to memory of 3520	4124	0a2e0704a26d489b1b6549dc82f2d805.exe	100

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

C:\Users\Admin\AppData\Local\Temp\0a2e0704a26d489b1b6549dc82f2d805.exe
"C:\Users\Admin\AppData\Local\Temp\0a2e0704a26d489b1b6549dc82f2d805.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:4124
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Windows\system32\khfGwTnk.dll,a
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  PID:4128
- 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\0a2e0704a26d489b1b6549dc82f2d805.exe"
  2⤵
  PID:3520

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

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Downloads

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

Filesize
43B

MD5
9a7ef09167a6f4433681b94351509043

SHA1
259b1375ed8e84943ca1d42646bb416325c89e12

SHA256
d5739a0510d89da572eb0b0d394d4fb4dd361cd9ee0144b9b31c590df93c3be7

SHA512
96b84cd88a0e4b7c1122af3ed6ce5edf0a9a4e9bf79575eadfac16b2c46f1278d57755d29f21d7c6dcb4403be24b7ac7da4837c6cc9c602342a8f2b8e54883df

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

Filesize
27KB

MD5
40a3c651aa903b38eacf9ad988681c5d

SHA1
bbc7903d4792e9f09c975ca48b625e94f0791fcc

SHA256
97e645600d880b818eada2b6dcb8739d5a99ef227efbe5e64d68d7348c0961c5

SHA512
96a1c7d141479ae519b3124de84d2a4a70aaaea6365cee5137df2fc9537d061b2d1372f0481300b4044dd60fbac9fb93eac0a296902df1391db15658aacc5e14

Download Submit
memory/4124-10-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/4124-3-0x0000000002020000-0x0000000002029000-memory.dmp

Filesize
36KB

Download
memory/4124-4-0x0000000000400000-0x0000000000410F37-memory.dmp

Filesize
67KB

Download
memory/4124-2-0x0000000000400000-0x0000000000410F37-memory.dmp

Filesize
67KB

Download
memory/4124-0-0x0000000000400000-0x0000000000410F37-memory.dmp

Filesize
67KB

Download
memory/4124-11-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/4124-12-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/4124-13-0x0000000002A70000-0x0000000002A76000-memory.dmp

Filesize
24KB

Download
memory/4124-18-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/4124-1-0x0000000000400000-0x0000000000410F37-memory.dmp

Filesize
67KB

Download
memory/4128-30-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/4128-32-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download