aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306

Analysis

max time kernel
152s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
05-12-2022 05:57

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General

Target

aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306.exe
Size

339KB
MD5

d0e088ac1c603465ae061ba4d50757bf
SHA1

127578cb261f56b2159e465ae64dbbfe319d88eb
SHA256

aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306
SHA512

484722388efc0f9323afb42027f89e426f89ce6444a68195007597c50935acfe2a9178453154e2b511745bead906229cfe38dc403694c2ad3863eaf7cc9c6395
SSDEEP

6144:SF8jQMQtt0JiWBFSbEbu+jaTvacPbkgo54UCodblRGxc1xDtFWA9rmNl9xVBhr:SF8jAtYB22azaLgzaLUcDDWCrmnVBF

Score

10^/10

persistence upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1004

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"	aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306.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

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DirectX For Microsoft® Windows = "C:\\Windows\\system32\\fservice.exe"	aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	services.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DirectX For Microsoft® Windows = "C:\\Windows\\system32\\fservice.exe"	services.exe

Executes dropped EXE 2 IoCs

pid	Process
2176	fservice.exe
3808	services.exe

Modifies Installed Components in the registry 2 TTPs 5 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
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}	aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\	aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\StubPath = "C:\\Windows\\system\\sservice.exe"	aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\	services.exe

UPX packed file 11 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0002000000022ddb-133.dat	upx
behavioral2/files/0x0002000000022ddb-134.dat	upx
behavioral2/files/0x0002000000022dde-135.dat	upx
behavioral2/files/0x0001000000022de5-137.dat	upx
behavioral2/files/0x0001000000022de5-138.dat	upx
behavioral2/memory/2340-139-0x0000000000400000-0x00000000005FE000-memory.dmp	upx
behavioral2/memory/2176-140-0x0000000000400000-0x00000000005FE000-memory.dmp	upx
behavioral2/memory/3808-142-0x0000000000400000-0x00000000005FE000-memory.dmp	upx
behavioral2/memory/2176-148-0x0000000000400000-0x00000000005FE000-memory.dmp	upx
behavioral2/memory/2340-150-0x0000000000400000-0x00000000005FE000-memory.dmp	upx
behavioral2/memory/3808-151-0x0000000000400000-0x00000000005FE000-memory.dmp	upx

Loads dropped DLL 5 IoCs

pid	Process
3808	services.exe
3808	services.exe
3808	services.exe
2176	fservice.exe
2340	aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306.exe

Modifies WinLogon 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\	aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306.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 opened for modification	C:\Windows\SysWOW64\fservice.exe	aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306.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
File created	C:\Windows\SysWOW64\fservice.exe	services.exe
File created	C:\Windows\SysWOW64\fservice.exe	aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306.exe

Drops file in Windows directory 7 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\sservice.exe	aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306.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 created	C:\Windows\system\sservice.exe	aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3808	services.exe
3808	services.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2340 wrote to memory of 2176	2340	aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306.exe	81
PID 2340 wrote to memory of 2176	2340	aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306.exe	81
PID 2340 wrote to memory of 2176	2340	aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306.exe	81
PID 2176 wrote to memory of 3808	2176	fservice.exe	82
PID 2176 wrote to memory of 3808	2176	fservice.exe	82
PID 2176 wrote to memory of 3808	2176	fservice.exe	82

C:\Users\Admin\AppData\Local\Temp\aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306.exe
"C:\Users\Admin\AppData\Local\Temp\aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306.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:2340
- 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:2176
- - C:\Windows\services.exe
    C:\Windows\services.exe -XP
    3⤵
    - Modifies WinLogon for persistence
    - Adds policy Run key to start application
    - Executes dropped EXE
    - Modifies Installed Components in the registry
    - Loads dropped DLL
    - Modifies WinLogon
    - Drops file in System32 directory
    - Drops file in Windows directory
    - Suspicious use of SetWindowsHookEx
    PID:3808

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\fservice.exe

Filesize
339KB

MD5
d0e088ac1c603465ae061ba4d50757bf

SHA1
127578cb261f56b2159e465ae64dbbfe319d88eb

SHA256
aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306

SHA512
484722388efc0f9323afb42027f89e426f89ce6444a68195007597c50935acfe2a9178453154e2b511745bead906229cfe38dc403694c2ad3863eaf7cc9c6395

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

Filesize
339KB

MD5
d0e088ac1c603465ae061ba4d50757bf

SHA1
127578cb261f56b2159e465ae64dbbfe319d88eb

SHA256
aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306

SHA512
484722388efc0f9323afb42027f89e426f89ce6444a68195007597c50935acfe2a9178453154e2b511745bead906229cfe38dc403694c2ad3863eaf7cc9c6395

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

Filesize
36KB

MD5
d4a3f90e159ffbcbc4f9740de4b7f171

SHA1
0542f5d1e2c23dca8d90766b3a8537dc3880e5c9

SHA256
2200dd5f83d2fb8c5d3994206a4fa9ff34b4cbfe56ed39a9a03c954cf45d8f77

SHA512
5493beb50b5f7d8ec52f32718d01696916ae173456005d0c1294ce695161ce5004aff58ee3892bf5db0f9b23720146a6d3ae8ffbcbbd81f84d894fdc8cf75a94

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

Filesize
36KB

MD5
d4a3f90e159ffbcbc4f9740de4b7f171

SHA1
0542f5d1e2c23dca8d90766b3a8537dc3880e5c9

SHA256
2200dd5f83d2fb8c5d3994206a4fa9ff34b4cbfe56ed39a9a03c954cf45d8f77

SHA512
5493beb50b5f7d8ec52f32718d01696916ae173456005d0c1294ce695161ce5004aff58ee3892bf5db0f9b23720146a6d3ae8ffbcbbd81f84d894fdc8cf75a94

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

Filesize
36KB

MD5
d4a3f90e159ffbcbc4f9740de4b7f171

SHA1
0542f5d1e2c23dca8d90766b3a8537dc3880e5c9

SHA256
2200dd5f83d2fb8c5d3994206a4fa9ff34b4cbfe56ed39a9a03c954cf45d8f77

SHA512
5493beb50b5f7d8ec52f32718d01696916ae173456005d0c1294ce695161ce5004aff58ee3892bf5db0f9b23720146a6d3ae8ffbcbbd81f84d894fdc8cf75a94

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

Filesize
36KB

MD5
d4a3f90e159ffbcbc4f9740de4b7f171

SHA1
0542f5d1e2c23dca8d90766b3a8537dc3880e5c9

SHA256
2200dd5f83d2fb8c5d3994206a4fa9ff34b4cbfe56ed39a9a03c954cf45d8f77

SHA512
5493beb50b5f7d8ec52f32718d01696916ae173456005d0c1294ce695161ce5004aff58ee3892bf5db0f9b23720146a6d3ae8ffbcbbd81f84d894fdc8cf75a94

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

Filesize
36KB

MD5
d4a3f90e159ffbcbc4f9740de4b7f171

SHA1
0542f5d1e2c23dca8d90766b3a8537dc3880e5c9

SHA256
2200dd5f83d2fb8c5d3994206a4fa9ff34b4cbfe56ed39a9a03c954cf45d8f77

SHA512
5493beb50b5f7d8ec52f32718d01696916ae173456005d0c1294ce695161ce5004aff58ee3892bf5db0f9b23720146a6d3ae8ffbcbbd81f84d894fdc8cf75a94

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

Filesize
24KB

MD5
43e7d9b875c921ba6be38d45540fb9dd

SHA1
f22a73fc0d4aa3ea6c0b8f61d974b028f308acc4

SHA256
f1b2b0abe844e6ba812c7f8709a463a7f6c56fa6ac38d376a0739cc3469f795b

SHA512
2e74e23c0875b69b82319391c392132f28f4eb45aa412805130382498ae48969a06a2b3a7528b626fa7d7ddb6b006f19f0ef8d73cf73cb9a0c0df44a21077622

Download Submit
C:\Windows\services.exe

Filesize
339KB

MD5
d0e088ac1c603465ae061ba4d50757bf

SHA1
127578cb261f56b2159e465ae64dbbfe319d88eb

SHA256
aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306

SHA512
484722388efc0f9323afb42027f89e426f89ce6444a68195007597c50935acfe2a9178453154e2b511745bead906229cfe38dc403694c2ad3863eaf7cc9c6395

Download Submit
C:\Windows\services.exe

Filesize
339KB

MD5
d0e088ac1c603465ae061ba4d50757bf

SHA1
127578cb261f56b2159e465ae64dbbfe319d88eb

SHA256
aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306

SHA512
484722388efc0f9323afb42027f89e426f89ce6444a68195007597c50935acfe2a9178453154e2b511745bead906229cfe38dc403694c2ad3863eaf7cc9c6395

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

Filesize
339KB

MD5
d0e088ac1c603465ae061ba4d50757bf

SHA1
127578cb261f56b2159e465ae64dbbfe319d88eb

SHA256
aac373c66fc3d35c2201bf1b78814ae049458a9c331a5792fe605fb2059b3306

SHA512
484722388efc0f9323afb42027f89e426f89ce6444a68195007597c50935acfe2a9178453154e2b511745bead906229cfe38dc403694c2ad3863eaf7cc9c6395

Download Submit
memory/2176-140-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/2176-148-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/2340-139-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/2340-150-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/3808-142-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/3808-145-0x0000000003921000-0x0000000003925000-memory.dmp

Filesize
16KB

Download
memory/3808-151-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads