84bae27563e88834580405573256385088d7e25066df5e0517437e37c15c8eb8

Analysis

max time kernel
121s
max time network
142s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
29-08-2023 15:42

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General

Target

tmp.exe
Size

48KB
MD5

d9c3c2288e361dfd4704ad811cae84cb
SHA1

21254fae99dd0f9f9410ca38bfb5f6aa76ff83a3
SHA256

84bae27563e88834580405573256385088d7e25066df5e0517437e37c15c8eb8
SHA512

7d9a3da4e933660749a33fb875a02f09f23512310082d56c485bd268a60ef955c7a5edb5ef7999670bccdb4e7944317a31b6afd8ca12f50b4cca277d5089dc8d
SSDEEP

768:zynb12Aw5J6HC4kq5Jp9bjAzhyY55J+NStcEeUlyqgZl4p67LhPC:Ub1MsHz3JDwhyWr+N95OTga64

Score

8^/10

persistence

Malware Config

Signatures

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SERDKS7\Parameters\ServiceDll = "C:\\Windows\\system32\\259422190.dll"	tmp.exe

Deletes itself 1 IoCs

pid	Process
2972	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2944	SERDKS7.exe

Loads dropped DLL 7 IoCs

pid	Process
2916	tmp.exe
2340	svchost.exe
2340	svchost.exe
2944	SERDKS7.exe
2944	SERDKS7.exe
2944	SERDKS7.exe
2944	SERDKS7.exe

Creates a Windows Service
persistence

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\SERDKS7.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\SERDKS7.exe	svchost.exe
File created	C:\Windows\SysWOW64\259422190.dll	tmp.exe

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

System Information Discovery
T1082

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	SERDKS7.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	SERDKS7.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft	SERDKS7.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie	SERDKS7.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum	SERDKS7.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\ActiveMovie\devenum\Version = "7"	SERDKS7.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2880	PING.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2916	tmp.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2916	tmp.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2916	tmp.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2916 wrote to memory of 2972	2916	tmp.exe	30
PID 2916 wrote to memory of 2972	2916	tmp.exe	30
PID 2916 wrote to memory of 2972	2916	tmp.exe	30
PID 2916 wrote to memory of 2972	2916	tmp.exe	30
PID 2972 wrote to memory of 2880	2972	cmd.exe	32
PID 2972 wrote to memory of 2880	2972	cmd.exe	32
PID 2972 wrote to memory of 2880	2972	cmd.exe	32
PID 2972 wrote to memory of 2880	2972	cmd.exe	32
PID 2340 wrote to memory of 2944	2340	svchost.exe	33
PID 2340 wrote to memory of 2944	2340	svchost.exe	33
PID 2340 wrote to memory of 2944	2340	svchost.exe	33
PID 2340 wrote to memory of 2944	2340	svchost.exe	33

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Sets DLL path for service in the registry
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2916
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 -n 1 && del /f/q "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2972
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 1
    3⤵
    - Runs ping.exe
    PID:2880

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SERDKS7"
1⤵
PID:2548

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SERDKS7"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2340
- C:\Windows\SysWOW64\SERDKS7.exe
  C:\Windows\system32\SERDKS7.exe "c:\windows\system32\259422190.dll",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Modifies data under HKEY_USERS
  PID:2944

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

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\SERDKS7.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
C:\Windows\SysWOW64\SERDKS7.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
\??\c:\windows\SysWOW64\259422190.dll

Filesize
25KB

MD5
1f01457e935405d1a926c8c598713920

SHA1
6c2c9664adc890e9d7f96469817dc5f3e6a5d515

SHA256
77c15d1ac75ad596b36e0828349940253692ae65dadd3f482a1c54e9ce1e33ed

SHA512
d4d5e5dcb528129a4b705f0e82b3bc93917c05bce9a822c0dea80339e80eda16e4706cf2f6a78c8769da27db7aac949c8640005080b91fa206f783be64bb8fbd

Download Submit
\Windows\SysWOW64\259422190.dll

Filesize
25KB

MD5
1f01457e935405d1a926c8c598713920

SHA1
6c2c9664adc890e9d7f96469817dc5f3e6a5d515

SHA256
77c15d1ac75ad596b36e0828349940253692ae65dadd3f482a1c54e9ce1e33ed

SHA512
d4d5e5dcb528129a4b705f0e82b3bc93917c05bce9a822c0dea80339e80eda16e4706cf2f6a78c8769da27db7aac949c8640005080b91fa206f783be64bb8fbd

Download Submit
\Windows\SysWOW64\259422190.dll

Filesize
25KB

MD5
1f01457e935405d1a926c8c598713920

SHA1
6c2c9664adc890e9d7f96469817dc5f3e6a5d515

SHA256
77c15d1ac75ad596b36e0828349940253692ae65dadd3f482a1c54e9ce1e33ed

SHA512
d4d5e5dcb528129a4b705f0e82b3bc93917c05bce9a822c0dea80339e80eda16e4706cf2f6a78c8769da27db7aac949c8640005080b91fa206f783be64bb8fbd

Download Submit
\Windows\SysWOW64\259422190.dll

Filesize
25KB

MD5
1f01457e935405d1a926c8c598713920

SHA1
6c2c9664adc890e9d7f96469817dc5f3e6a5d515

SHA256
77c15d1ac75ad596b36e0828349940253692ae65dadd3f482a1c54e9ce1e33ed

SHA512
d4d5e5dcb528129a4b705f0e82b3bc93917c05bce9a822c0dea80339e80eda16e4706cf2f6a78c8769da27db7aac949c8640005080b91fa206f783be64bb8fbd

Download Submit
\Windows\SysWOW64\259422190.dll

Filesize
25KB

MD5
1f01457e935405d1a926c8c598713920

SHA1
6c2c9664adc890e9d7f96469817dc5f3e6a5d515

SHA256
77c15d1ac75ad596b36e0828349940253692ae65dadd3f482a1c54e9ce1e33ed

SHA512
d4d5e5dcb528129a4b705f0e82b3bc93917c05bce9a822c0dea80339e80eda16e4706cf2f6a78c8769da27db7aac949c8640005080b91fa206f783be64bb8fbd

Download Submit
\Windows\SysWOW64\259422190.dll

Filesize
25KB

MD5
1f01457e935405d1a926c8c598713920

SHA1
6c2c9664adc890e9d7f96469817dc5f3e6a5d515

SHA256
77c15d1ac75ad596b36e0828349940253692ae65dadd3f482a1c54e9ce1e33ed

SHA512
d4d5e5dcb528129a4b705f0e82b3bc93917c05bce9a822c0dea80339e80eda16e4706cf2f6a78c8769da27db7aac949c8640005080b91fa206f783be64bb8fbd

Download Submit
\Windows\SysWOW64\259422190.dll

Filesize
25KB

MD5
1f01457e935405d1a926c8c598713920

SHA1
6c2c9664adc890e9d7f96469817dc5f3e6a5d515

SHA256
77c15d1ac75ad596b36e0828349940253692ae65dadd3f482a1c54e9ce1e33ed

SHA512
d4d5e5dcb528129a4b705f0e82b3bc93917c05bce9a822c0dea80339e80eda16e4706cf2f6a78c8769da27db7aac949c8640005080b91fa206f783be64bb8fbd

Download Submit
\Windows\SysWOW64\SERDKS7.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit