cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a

Analysis

max time kernel
150s
max time network
92s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
01/12/2022, 09:25

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General

Target

cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.exe
Size

342KB
MD5

ecaf7a3b6377fcede44675958ddeb68e
SHA1

e68970f2a41501f7772989ff6d473510aa30c123
SHA256

cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a
SHA512

b8113e1d9a37690375c1b5d06edce64f7f03af8f7abad2600d9f507c13630f7de09e73ad7f8f97548462498f37c04e2c5209988f01b7da30587e2c23b47cce5c
SSDEEP

6144:FRqmpp+amNOGokzLyM9tsLAitQo6tzOKkzIt8gKyfjxfR9D2j4ywxitzJFn6e:bqmpplpGoGL3etQoMiXM8gxf/Sj4yHt/

Score

10^/10

aspackv2 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"	cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe C:\\Windows\\system32\\fservice.exe"	services.exe

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral1/files/0x000b00000001313e-66.dat	aspack_v212_v242

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

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"	cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.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
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.exe

Executes dropped EXE 2 IoCs

pid	Process
1664	fservice.exe
1400	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
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}	cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\	cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5Y99AE78-58TT-11dW-BE53-Y67078979Y}\StubPath = "C:\\Windows\\system\\sservice.exe"	cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.exe
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

UPX packed file 13 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1660-55-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral1/files/0x000c0000000054a8-56.dat	upx
behavioral1/files/0x000c0000000054a8-57.dat	upx
behavioral1/files/0x000c0000000054a8-59.dat	upx
behavioral1/files/0x000c0000000054a8-61.dat	upx
behavioral1/files/0x000a00000001313e-62.dat	upx
behavioral1/files/0x000800000001339d-64.dat	upx
behavioral1/memory/1664-75-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral1/files/0x000800000001339d-72.dat	upx
behavioral1/memory/1400-76-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral1/memory/1660-81-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral1/memory/1664-78-0x0000000000400000-0x00000000005FC000-memory.dmp	upx
behavioral1/memory/1400-85-0x0000000000400000-0x00000000005FC000-memory.dmp	upx

Deletes itself 1 IoCs

pid	Process
1772	cmd.exe

Loads dropped DLL 6 IoCs

pid	Process
1660	cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.exe
1660	cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.exe
1400	services.exe
1400	services.exe
1664	fservice.exe
1660	cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.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\	cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.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\reginv.dll	services.exe
File created	C:\Windows\SysWOW64\fservice.exe	services.exe
File created	C:\Windows\SysWOW64\fservice.exe	cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.exe
File opened for modification	C:\Windows\SysWOW64\fservice.exe	cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.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

Drops file in Windows directory 8 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\sservice.exe	cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.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
File created	C:\Windows\system\sservice.exe	cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe
1400	services.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1400	services.exe
1400	services.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1660 wrote to memory of 1664	1660	cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.exe	28
PID 1660 wrote to memory of 1664	1660	cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.exe	28
PID 1660 wrote to memory of 1664	1660	cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.exe	28
PID 1660 wrote to memory of 1664	1660	cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.exe	28
PID 1664 wrote to memory of 1400	1664	fservice.exe	29
PID 1664 wrote to memory of 1400	1664	fservice.exe	29
PID 1664 wrote to memory of 1400	1664	fservice.exe	29
PID 1664 wrote to memory of 1400	1664	fservice.exe	29
PID 1400 wrote to memory of 1040	1400	services.exe	30
PID 1400 wrote to memory of 1040	1400	services.exe	30
PID 1400 wrote to memory of 1040	1400	services.exe	30
PID 1400 wrote to memory of 1040	1400	services.exe	30
PID 1400 wrote to memory of 1724	1400	services.exe	31
PID 1400 wrote to memory of 1724	1400	services.exe	31
PID 1400 wrote to memory of 1724	1400	services.exe	31
PID 1400 wrote to memory of 1724	1400	services.exe	31
PID 1660 wrote to memory of 1772	1660	cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.exe	34
PID 1660 wrote to memory of 1772	1660	cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.exe	34
PID 1660 wrote to memory of 1772	1660	cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.exe	34
PID 1660 wrote to memory of 1772	1660	cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.exe	34
PID 1040 wrote to memory of 1996	1040	NET.exe	37
PID 1040 wrote to memory of 1996	1040	NET.exe	37
PID 1040 wrote to memory of 1996	1040	NET.exe	37
PID 1040 wrote to memory of 1996	1040	NET.exe	37
PID 1724 wrote to memory of 1444	1724	NET.exe	36
PID 1724 wrote to memory of 1444	1724	NET.exe	36
PID 1724 wrote to memory of 1444	1724	NET.exe	36
PID 1724 wrote to memory of 1444	1724	NET.exe	36

C:\Users\Admin\AppData\Local\Temp\cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.exe
"C:\Users\Admin\AppData\Local\Temp\cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.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:1660
- 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:1664
- - 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 behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1400
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP srservice
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1040
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP srservice
        5⤵
        
        PID:1996
  - - C:\Windows\SysWOW64\NET.exe
      NET STOP navapsvc
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1724
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 STOP navapsvc
        5⤵
        
        PID:1444
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.exe.bat
  2⤵
  - Deletes itself
  PID:1772

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:\Users\Admin\AppData\Local\Temp\cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a.exe.bat

Filesize
133B

MD5
c2c5c1ed6dc46b3fc75abe332667f6d6

SHA1
57c1a15f4fd176e0a4ebe25d1ea2d04ac1141079

SHA256
e3e668d8968c4d12e0cd809b6230f8fbc37461630b12f548eb70875c45ca848f

SHA512
75c3cf11a39db86b6cd813d70b1e209a62b2471f0d317f6a4e84a6afe8f7285bcc122963687971e4d6e80922d2e6baa778a0324af7e60f3c0eb3d5313f9b3131

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

Filesize
342KB

MD5
ecaf7a3b6377fcede44675958ddeb68e

SHA1
e68970f2a41501f7772989ff6d473510aa30c123

SHA256
cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a

SHA512
b8113e1d9a37690375c1b5d06edce64f7f03af8f7abad2600d9f507c13630f7de09e73ad7f8f97548462498f37c04e2c5209988f01b7da30587e2c23b47cce5c

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

Filesize
342KB

MD5
ecaf7a3b6377fcede44675958ddeb68e

SHA1
e68970f2a41501f7772989ff6d473510aa30c123

SHA256
cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a

SHA512
b8113e1d9a37690375c1b5d06edce64f7f03af8f7abad2600d9f507c13630f7de09e73ad7f8f97548462498f37c04e2c5209988f01b7da30587e2c23b47cce5c

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

Filesize
36KB

MD5
562e0d01d6571fa2251a1e9f54c6cc69

SHA1
83677ad3bc630aa6327253c7b3deffbd4a8ce905

SHA256
c5b1d800c86d550c0b68c57c0d9911c1dd21df9e5e37e9e7bc032b5e66fdebe6

SHA512
166e132432eca24061f7e7d0c58c0b286e971ae2bc50f7c890b7707dd5dede19fcd83a5f79b6fd3f93dd691e07ad9bc1bd05fe82ccaade1610282188571585ea

Download Submit
C:\Windows\services.exe

Filesize
342KB

MD5
ecaf7a3b6377fcede44675958ddeb68e

SHA1
e68970f2a41501f7772989ff6d473510aa30c123

SHA256
cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a

SHA512
b8113e1d9a37690375c1b5d06edce64f7f03af8f7abad2600d9f507c13630f7de09e73ad7f8f97548462498f37c04e2c5209988f01b7da30587e2c23b47cce5c

Download Submit
C:\Windows\services.exe

Filesize
342KB

MD5
ecaf7a3b6377fcede44675958ddeb68e

SHA1
e68970f2a41501f7772989ff6d473510aa30c123

SHA256
cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a

SHA512
b8113e1d9a37690375c1b5d06edce64f7f03af8f7abad2600d9f507c13630f7de09e73ad7f8f97548462498f37c04e2c5209988f01b7da30587e2c23b47cce5c

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

Filesize
342KB

MD5
ecaf7a3b6377fcede44675958ddeb68e

SHA1
e68970f2a41501f7772989ff6d473510aa30c123

SHA256
cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a

SHA512
b8113e1d9a37690375c1b5d06edce64f7f03af8f7abad2600d9f507c13630f7de09e73ad7f8f97548462498f37c04e2c5209988f01b7da30587e2c23b47cce5c

Download Submit
\Windows\SysWOW64\fservice.exe

Filesize
342KB

MD5
ecaf7a3b6377fcede44675958ddeb68e

SHA1
e68970f2a41501f7772989ff6d473510aa30c123

SHA256
cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a

SHA512
b8113e1d9a37690375c1b5d06edce64f7f03af8f7abad2600d9f507c13630f7de09e73ad7f8f97548462498f37c04e2c5209988f01b7da30587e2c23b47cce5c

Download Submit
\Windows\SysWOW64\fservice.exe

Filesize
342KB

MD5
ecaf7a3b6377fcede44675958ddeb68e

SHA1
e68970f2a41501f7772989ff6d473510aa30c123

SHA256
cfaacc1ba48c6cf3074fe805ced8b86a28dbb638111437e704d614f30ec9333a

SHA512
b8113e1d9a37690375c1b5d06edce64f7f03af8f7abad2600d9f507c13630f7de09e73ad7f8f97548462498f37c04e2c5209988f01b7da30587e2c23b47cce5c

Download Submit
\Windows\SysWOW64\reginv.dll

Filesize
36KB

MD5
562e0d01d6571fa2251a1e9f54c6cc69

SHA1
83677ad3bc630aa6327253c7b3deffbd4a8ce905

SHA256
c5b1d800c86d550c0b68c57c0d9911c1dd21df9e5e37e9e7bc032b5e66fdebe6

SHA512
166e132432eca24061f7e7d0c58c0b286e971ae2bc50f7c890b7707dd5dede19fcd83a5f79b6fd3f93dd691e07ad9bc1bd05fe82ccaade1610282188571585ea

Download Submit
\Windows\SysWOW64\reginv.dll

Filesize
36KB

MD5
562e0d01d6571fa2251a1e9f54c6cc69

SHA1
83677ad3bc630aa6327253c7b3deffbd4a8ce905

SHA256
c5b1d800c86d550c0b68c57c0d9911c1dd21df9e5e37e9e7bc032b5e66fdebe6

SHA512
166e132432eca24061f7e7d0c58c0b286e971ae2bc50f7c890b7707dd5dede19fcd83a5f79b6fd3f93dd691e07ad9bc1bd05fe82ccaade1610282188571585ea

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/1400-77-0x0000000010000000-0x000000001000B000-memory.dmp

Filesize
44KB

Download
memory/1400-85-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1400-76-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1660-81-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

Download
memory/1660-54-0x0000000075FB1000-0x0000000075FB3000-memory.dmp

Filesize
8KB

Download
memory/1660-69-0x00000000031A0000-0x000000000339C000-memory.dmp

Filesize
2.0MB

Download
memory/1660-55-0x0000000000400000-0x00000000005FC000-memory.dmp

Filesize
2.0MB

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memory/1660-70-0x00000000031A0000-0x000000000339C000-memory.dmp

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memory/1664-75-0x0000000000400000-0x00000000005FC000-memory.dmp

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memory/1664-78-0x0000000000400000-0x00000000005FC000-memory.dmp

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