334de1d5c8bbdf92028be5824d1464f727436d58f9e8ced1c1ac824743686093

Analysis

max time kernel
148s
max time network
155s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
24/12/2023, 18:39

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General

Target

0c8a4b9585343d742758a6ae32c3739a.exe
Size

1.9MB
MD5

0c8a4b9585343d742758a6ae32c3739a
SHA1

e209ae2cf7c780c8e36ac18fbacb13d583bfe12d
SHA256

334de1d5c8bbdf92028be5824d1464f727436d58f9e8ced1c1ac824743686093
SHA512

bf127855dd52fee4ea3496e617b8e716ae7b773aaa9c702f8a326f7c3a72dec672b9f859f5c876145f68998f37dae8afad7ec1e425ed2e0932ad1e209ec675e0
SSDEEP

12288:RFfwcHcu8pMkZ3Fn9d+Vd3SUZ+7EeI1x7f7V3+hT6DaRWz58kc+1xy8SyGO4A:RJcu8pl9d+VdCUhN1SsNK+1pSyH4A

Score

10^/10

aspackv2 persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Windows\\system32\\fservice.exe"	0c8a4b9585343d742758a6ae32c3739a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Windows\\system32\\fservice.exe"	services.exe

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DirectX For Microsoft® Windows = "C:\\Windows\\system32\\fservice.exe"	services.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	0c8a4b9585343d742758a6ae32c3739a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DirectX For Microsoft® Windows = "C:\\Windows\\system32\\fservice.exe"	0c8a4b9585343d742758a6ae32c3739a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	services.exe

Modifies Installed Components in the registry 2 TTPs 5 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\	services.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\StubPath = "C:\\Windows\\system\\sservice.exe"	services.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}	0c8a4b9585343d742758a6ae32c3739a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\	0c8a4b9585343d742758a6ae32c3739a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\StubPath = "C:\\Windows\\system\\sservice.exe"	0c8a4b9585343d742758a6ae32c3739a.exe

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral1/files/0x002f000000015ca1-24.dat	aspack_v212_v242

Deletes itself 1 IoCs

pid	Process
2608	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
2668	fservice.exe
2688	services.exe

Loads dropped DLL 6 IoCs

pid	Process
1728	0c8a4b9585343d742758a6ae32c3739a.exe
1728	0c8a4b9585343d742758a6ae32c3739a.exe
2688	services.exe
2688	services.exe
2668	fservice.exe
1728	0c8a4b9585343d742758a6ae32c3739a.exe

Modifies WinLogon 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\	0c8a4b9585343d742758a6ae32c3739a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\	services.exe

Drops file in System32 directory 7 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\fservice.exe	services.exe
File created	C:\Windows\SysWOW64\fservice.exe	0c8a4b9585343d742758a6ae32c3739a.exe
File opened for modification	C:\Windows\SysWOW64\fservice.exe	0c8a4b9585343d742758a6ae32c3739a.exe
File created	C:\Windows\SysWOW64\fservice.exe	fservice.exe
File opened for modification	C:\Windows\SysWOW64\fservice.exe	fservice.exe
File created	C:\Windows\SysWOW64\winkey.dll	services.exe
File created	C:\Windows\SysWOW64\reginv.dll	services.exe

Drops file in Windows directory 8 IoCs

description	ioc	Process
File created	C:\Windows\system\sservice.exe	0c8a4b9585343d742758a6ae32c3739a.exe
File opened for modification	C:\Windows\system\sservice.exe	0c8a4b9585343d742758a6ae32c3739a.exe
File created	C:\Windows\services.exe	fservice.exe
File opened for modification	C:\Windows\services.exe	fservice.exe
File created	C:\Windows\system\sservice.exe	fservice.exe
File opened for modification	C:\Windows\system\sservice.exe	fservice.exe
File created	C:\Windows\system\sservice.exe	services.exe
File opened for modification	C:\Windows\system\sservice.exe	services.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe
2688	services.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2688	services.exe
2688	services.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1728 wrote to memory of 2668	1728	0c8a4b9585343d742758a6ae32c3739a.exe	28
PID 1728 wrote to memory of 2668	1728	0c8a4b9585343d742758a6ae32c3739a.exe	28
PID 1728 wrote to memory of 2668	1728	0c8a4b9585343d742758a6ae32c3739a.exe	28
PID 1728 wrote to memory of 2668	1728	0c8a4b9585343d742758a6ae32c3739a.exe	28
PID 2668 wrote to memory of 2688	2668	fservice.exe	29
PID 2668 wrote to memory of 2688	2668	fservice.exe	29
PID 2668 wrote to memory of 2688	2668	fservice.exe	29
PID 2668 wrote to memory of 2688	2668	fservice.exe	29
PID 2688 wrote to memory of 2816	2688	services.exe	33
PID 2688 wrote to memory of 2816	2688	services.exe	33
PID 2688 wrote to memory of 2816	2688	services.exe	33
PID 2688 wrote to memory of 2816	2688	services.exe	33
PID 2688 wrote to memory of 2740	2688	services.exe	32
PID 2688 wrote to memory of 2740	2688	services.exe	32
PID 2688 wrote to memory of 2740	2688	services.exe	32
PID 2688 wrote to memory of 2740	2688	services.exe	32
PID 1728 wrote to memory of 2608	1728	0c8a4b9585343d742758a6ae32c3739a.exe	37
PID 1728 wrote to memory of 2608	1728	0c8a4b9585343d742758a6ae32c3739a.exe	37
PID 1728 wrote to memory of 2608	1728	0c8a4b9585343d742758a6ae32c3739a.exe	37
PID 1728 wrote to memory of 2608	1728	0c8a4b9585343d742758a6ae32c3739a.exe	37
PID 2816 wrote to memory of 2760	2816	NET.exe	36
PID 2816 wrote to memory of 2760	2816	NET.exe	36
PID 2816 wrote to memory of 2760	2816	NET.exe	36
PID 2816 wrote to memory of 2760	2816	NET.exe	36
PID 2740 wrote to memory of 2748	2740	NET.exe	34
PID 2740 wrote to memory of 2748	2740	NET.exe	34
PID 2740 wrote to memory of 2748	2740	NET.exe	34
PID 2740 wrote to memory of 2748	2740	NET.exe	34

C:\Users\Admin\AppData\Local\Temp\0c8a4b9585343d742758a6ae32c3739a.exe
"C:\Users\Admin\AppData\Local\Temp\0c8a4b9585343d742758a6ae32c3739a.exe"
1⤵
- Modifies WinLogon for persistence
- Adds policy Run key to start application
- Modifies Installed Components in the registry
- Loads dropped DLL
- Modifies WinLogon
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1728
- C:\Windows\SysWOW64\fservice.exe
  C:\Windows\system32\fservice.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in System32 directory
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2668
- - C:\Windows\services.exe
    C:\Windows\services.exe -XP
    3⤵
    - Modifies WinLogon for persistence
    - Adds policy Run key to start application
    - Modifies Installed Components in the registry
    - Executes dropped EXE
    - Loads dropped DLL
    - Modifies WinLogon
    - Drops file in System32 directory
    - Drops file in Windows directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2688
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP navapsvc
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2740
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP navapsvc
        5⤵
        
        PID:2748
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP srservice
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2816
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP srservice
        5⤵
        
        PID:2760
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\0c8a4b9585343d742758a6ae32c3739a.exe.bat
  2⤵
  - Deletes itself
  PID:2608

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

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

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\0c8a4b9585343d742758a6ae32c3739a.exe.bat

Filesize
133B

MD5
183bc952982ee3a973b844b55fb72d51

SHA1
625d6742dfae6def7d8b62a0b86b7aa18ed4706d

SHA256
516f9ad5f244b5f96f19807df4d0db5557cba36fbf4e7925a9486791eb3806fc

SHA512
6aca759304480101a64188922bf1971c05b1f76772dcd90fa5d27f92470563fbbb813e97a575364121563ac0292ffd427b4bc20b1a94a0680150fda0424bb930

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

Filesize
159KB

MD5
f5c4ea7b1313ca53bc0e554b97946596

SHA1
2ba2baa20ed978f40a496e39f212189f1d3e244c

SHA256
4e818cbd4295837a5b24ed69284b539153dd6dc74bc90562c9740ff1493056e0

SHA512
628d8dc86749aafdf95eccde0aced5fe92aabe750bc204c6bb1a4a923561fd5b588f6eedfa4610814b0bcfd2ddd091d38624b873824aa445b3bb573beba3387a

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

Filesize
84KB

MD5
061db8354c22431854174b8eaab39803

SHA1
245288c3b27c1e216c90379d5a94fc516d8171e0

SHA256
fab1beb14acf4bfde34fbdcb93f42f685960d8f027d596e44e342e7287422083

SHA512
30da3f24250ee9256a92cafc211005a0b542f10e3e26bf5dea6778a01ba0b652460350a8ea610d4be8cf8834e068c2cef35882e189d982aba0b0ad104f7a549a

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

Filesize
116KB

MD5
e05e2ca69a017592a2be1e94ecca47eb

SHA1
d89b76da2301df099e63753e9eaf168ceed5fe20

SHA256
a119c17a82b6d75b2099fef094e2eeadc38081993f4cfa8a2b524a632f202dae

SHA512
7c84791d0f6e5784f265df6b22146dc2d6cfcafcc542073931b534a9d43c40b6c6fc06c7a9bfd0c53148b1c0c0246ae5041ed5d540b4c61cebbe9aaac1c1acf7

Download Submit
C:\Windows\services.exe

Filesize
50KB

MD5
979d1862bf9aae910f39cfac81e25461

SHA1
c8d5c5401569c64740a545bcde7ca81aa1216199

SHA256
31d3871b1d4d39bb512e4b6a31b15ee6426a9cebb27fe451a00b23d2492eac64

SHA512
15b63636e763d7f23ec73d1ef88c8730040edfc81ace7c5773aea640029c2643bb7bbe77fa0d74564e4a1a36d8e5ffbbab3156108baacefcb803f8bb6a7314f2

Download Submit
C:\Windows\services.exe

Filesize
69KB

MD5
a9e0edaf9ed2412f5b98dab889f10b43

SHA1
9fb8b3a021ccd3df72a56c10535f09a19f0920e1

SHA256
c9abd91acfa752dc638c21b6589a41cc76ecc63adedb58df71dfeb675ff72964

SHA512
a3ab4f597cc222c29ae6592d42d36fb73e3e0ad43857583369cf55766a51b1c785e54caacc25dab72e48202bd6677b3437e59a12c19b99e8fb918dcb867a7edd

Download Submit
C:\Windows\system\sservice.exe

Filesize
72KB

MD5
43d9cdcce2768e889a93f6a094e66dc8

SHA1
279d7ca2b70dc284c36caa95090b33216c915063

SHA256
83623cace449eb0a16e9df5366f357783de892baca239c744d796f8b93da64a7

SHA512
138945715cfc84abc8cd2bbbf4880b85daa59f85fe7611c0fe5356273e637277ab2feed01b2a45b960c88bb1627a1e0373f553fe5ed656a1af5c9eddeadc075b

Download Submit
\Windows\SysWOW64\fservice.exe

Filesize
157KB

MD5
d79d48c848e84841b552ae1d0a613af2

SHA1
0470695f5d224d5c5ac0e9beab36216318a23e2d

SHA256
4502b676e48d076b97c2fef5a7e9649e68e2ac6005238b49071862839103c5e3

SHA512
82add62af9d3a567de8a69e5ca4cfe32cae1ae33260ee8b03182eb7a7a3c5fb717f80b156fc5f1c5bef29f2851e004ad469b855aecc47b471210aaa243493004

Download Submit
\Windows\SysWOW64\fservice.exe

Filesize
73KB

MD5
bef51625f82ef5093e9befe303d8d353

SHA1
257eae9fc8f4a5b80b6fd16e0c2cfc262a064100

SHA256
c6a243060d6ee39a4f8bc84f892603b4f825142e883f895ee756a1a760ac7727

SHA512
aacc69f03e0ea3e26b0d2c6b36079098f05495401f2d20110b0cb7dd5606ac782ff32889eae0b9b1df97b207e84456aa99ecc28dc41f5fdef6d96c532216c4cc

Download Submit
\Windows\SysWOW64\reginv.dll

Filesize
36KB

MD5
562e0d01d6571fa2251a1e9f54c6cc69

SHA1
83677ad3bc630aa6327253c7b3deffbd4a8ce905

SHA256
c5b1d800c86d550c0b68c57c0d9911c1dd21df9e5e37e9e7bc032b5e66fdebe6

SHA512
166e132432eca24061f7e7d0c58c0b286e971ae2bc50f7c890b7707dd5dede19fcd83a5f79b6fd3f93dd691e07ad9bc1bd05fe82ccaade1610282188571585ea

Download Submit
\Windows\SysWOW64\winkey.dll

Filesize
13KB

MD5
b4c72da9fd1a0dcb0698b7da97daa0cd

SHA1
b25a79e8ea4c723c58caab83aed6ea48de7ed759

SHA256
45d266269634ba2de70f179a26d7224111e677e66b38dff2802851b71ce4458f

SHA512
f5f184416c5381d275bc093c9275e9fdb35c58e2c401d188aef097950013de6e43269da5d4dd5e7baea34735bd7de664d15fe487b2292fd66926c9845b0cd066

Download Submit
memory/1728-42-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download
memory/1728-0-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2668-34-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download
memory/2668-12-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2688-52-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download
memory/2688-58-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download
memory/2688-44-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download
memory/2688-45-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download
memory/2688-47-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download
memory/2688-49-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2688-50-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download
memory/2688-22-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2688-26-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download
memory/2688-54-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download
memory/2688-56-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download
memory/2688-60-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download
memory/2688-62-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download
memory/2688-64-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download
memory/2688-66-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download
memory/2688-68-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download
memory/2688-70-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download
memory/2688-72-0x0000000000400000-0x00000000005F8000-memory.dmp

Filesize
2.0MB

Download