f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba

Analysis

max time kernel
151s
max time network
55s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
24/11/2022, 09:50

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General

Target

f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe
Size

185KB
MD5

87da96422cbb87d1d5dddf3020bdf113
SHA1

ace3f2d581e2f0467c81701624db41097624e3e6
SHA256

f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba
SHA512

8bdeb2df947aca2f321c8949c22b41a324ef0ea40fb7d2167246eb99e0a0d5d87e827578cc2277f9d5bea36ad7d23a61e0b1d2dbb152ccd5a2f5371bdecb5b75
SSDEEP

1536:uXFdueBTNWCTQ/kZaEGLU+D7lDAj/70+ZdD7TB1LW7ecPL1k3Urrrrh:kdlBTwCT2kZaED+DJYjNZlB14BOA

Score

10^/10

persistence

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\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, C:\\Program Files (x86)\\Microsoft Services\\symgr.exe"	symgr.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, C:\\Program Files (x86)\\Microsoft Services\\symgr.exe"	symgr.exe

Executes dropped EXE 3 IoCs

pid	Process
484	symgr.exe
1700	symgr.exe
1928	wd.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\svchost\ImagePath = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	symgr.exe

Loads dropped DLL 4 IoCs

pid	Process
268	f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe
268	f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe
1700	symgr.exe
988	dw20.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\WindowsUpdate = "C:\\Program Files (x86)\\Microsoft Services\\symgr.exe -rundll32 /SYSTEM32 \"C:\\Windows\\System32\\taskmgr.exe\" \"C:\\Program Files\\Microsoft\\Windows\""	symgr.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Microsoft.com	symgr.exe
File opened for modification	C:\Windows\SysWOW64\Microsoft.com	symgr.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1768 set thread context of 268	1768	f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe	28
PID 484 set thread context of 1700	484	symgr.exe	30

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft Services\	f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe
File created	C:\Program Files (x86)\Microsoft Services\symgr.exe	f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe
File opened for modification	C:\Program Files (x86)\Microsoft Services\symgr.exe	f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
268	f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1928	wd.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1928	wd.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1928	wd.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1928	wd.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1928	wd.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1928	wd.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1928	wd.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1928	wd.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1928	wd.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1928	wd.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1928	wd.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe
1700	symgr.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
268	f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	268	f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe
Token: SeDebugPrivilege	1700	symgr.exe
Token: SeDebugPrivilege	1928	wd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1768 wrote to memory of 268	1768	f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe	28
PID 1768 wrote to memory of 268	1768	f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe	28
PID 1768 wrote to memory of 268	1768	f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe	28
PID 1768 wrote to memory of 268	1768	f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe	28
PID 1768 wrote to memory of 268	1768	f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe	28
PID 1768 wrote to memory of 268	1768	f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe	28
PID 1768 wrote to memory of 268	1768	f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe	28
PID 1768 wrote to memory of 268	1768	f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe	28
PID 1768 wrote to memory of 268	1768	f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe	28
PID 268 wrote to memory of 484	268	f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe	29
PID 268 wrote to memory of 484	268	f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe	29
PID 268 wrote to memory of 484	268	f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe	29
PID 268 wrote to memory of 484	268	f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe	29
PID 484 wrote to memory of 1700	484	symgr.exe	30
PID 484 wrote to memory of 1700	484	symgr.exe	30
PID 484 wrote to memory of 1700	484	symgr.exe	30
PID 484 wrote to memory of 1700	484	symgr.exe	30
PID 484 wrote to memory of 1700	484	symgr.exe	30
PID 484 wrote to memory of 1700	484	symgr.exe	30
PID 484 wrote to memory of 1700	484	symgr.exe	30
PID 484 wrote to memory of 1700	484	symgr.exe	30
PID 484 wrote to memory of 1700	484	symgr.exe	30
PID 1700 wrote to memory of 1928	1700	symgr.exe	31
PID 1700 wrote to memory of 1928	1700	symgr.exe	31
PID 1700 wrote to memory of 1928	1700	symgr.exe	31
PID 1700 wrote to memory of 1928	1700	symgr.exe	31
PID 1700 wrote to memory of 988	1700	symgr.exe	33
PID 1700 wrote to memory of 988	1700	symgr.exe	33
PID 1700 wrote to memory of 988	1700	symgr.exe	33
PID 1700 wrote to memory of 988	1700	symgr.exe	33

C:\Users\Admin\AppData\Local\Temp\f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe
"C:\Users\Admin\AppData\Local\Temp\f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1768
- C:\Users\Admin\AppData\Local\Temp\f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe
  "C:\Users\Admin\AppData\Local\Temp\f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba.exe"
  2⤵
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:268
- - C:\Program Files (x86)\Microsoft Services\symgr.exe
    "C:\Program Files (x86)\Microsoft Services\symgr.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:484
  - - C:\Program Files (x86)\Microsoft Services\symgr.exe
      "C:\Program Files (x86)\Microsoft Services\symgr.exe"
      4⤵
      Modifies WinLogon for persistence
      Executes dropped EXE
      Sets service image path in registry
      Loads dropped DLL
      Adds Run key to start application
      Drops file in System32 directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1700
    - - C:\Users\Admin\AppData\Roaming\wd.exe
        
        "C:\Users\Admin\AppData\Roaming\wd.exe"
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1928
    - - C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
        
        dw20.exe -x -s 1036
        5⤵
        Loads dropped DLL
        
        PID:988

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Microsoft Services\symgr.exe

Filesize
185KB

MD5
87da96422cbb87d1d5dddf3020bdf113

SHA1
ace3f2d581e2f0467c81701624db41097624e3e6

SHA256
f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba

SHA512
8bdeb2df947aca2f321c8949c22b41a324ef0ea40fb7d2167246eb99e0a0d5d87e827578cc2277f9d5bea36ad7d23a61e0b1d2dbb152ccd5a2f5371bdecb5b75

Download Submit
C:\Program Files (x86)\Microsoft Services\symgr.exe

Filesize
185KB

MD5
87da96422cbb87d1d5dddf3020bdf113

SHA1
ace3f2d581e2f0467c81701624db41097624e3e6

SHA256
f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba

SHA512
8bdeb2df947aca2f321c8949c22b41a324ef0ea40fb7d2167246eb99e0a0d5d87e827578cc2277f9d5bea36ad7d23a61e0b1d2dbb152ccd5a2f5371bdecb5b75

Download Submit
C:\Program Files (x86)\Microsoft Services\symgr.exe

Filesize
185KB

MD5
87da96422cbb87d1d5dddf3020bdf113

SHA1
ace3f2d581e2f0467c81701624db41097624e3e6

SHA256
f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba

SHA512
8bdeb2df947aca2f321c8949c22b41a324ef0ea40fb7d2167246eb99e0a0d5d87e827578cc2277f9d5bea36ad7d23a61e0b1d2dbb152ccd5a2f5371bdecb5b75

Download Submit
C:\Users\Admin\AppData\Roaming\wd.exe

Filesize
6KB

MD5
8958d73eee15ff6566a97afb119b41d6

SHA1
f43d25ad3a587746108d2863c97512d7f15ce0b2

SHA256
a4897d3b6ab56138ece84246e7635df1c71adf900fedeaf9a724dac4bc17d4bd

SHA512
ca9d48cf490fbc7fec8d1814023cc5ca3b6a12a97165fb57781b72bf5211865c68468b16b223ae2495a472d713b95a544a357d199efff861f5ee390dbf16f255

Download Submit
C:\Users\Admin\AppData\Roaming\wd.exe

Filesize
6KB

MD5
8958d73eee15ff6566a97afb119b41d6

SHA1
f43d25ad3a587746108d2863c97512d7f15ce0b2

SHA256
a4897d3b6ab56138ece84246e7635df1c71adf900fedeaf9a724dac4bc17d4bd

SHA512
ca9d48cf490fbc7fec8d1814023cc5ca3b6a12a97165fb57781b72bf5211865c68468b16b223ae2495a472d713b95a544a357d199efff861f5ee390dbf16f255

Download Submit
\Program Files (x86)\Microsoft Services\symgr.exe

Filesize
185KB

MD5
87da96422cbb87d1d5dddf3020bdf113

SHA1
ace3f2d581e2f0467c81701624db41097624e3e6

SHA256
f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba

SHA512
8bdeb2df947aca2f321c8949c22b41a324ef0ea40fb7d2167246eb99e0a0d5d87e827578cc2277f9d5bea36ad7d23a61e0b1d2dbb152ccd5a2f5371bdecb5b75

Download Submit
\Program Files (x86)\Microsoft Services\symgr.exe

Filesize
185KB

MD5
87da96422cbb87d1d5dddf3020bdf113

SHA1
ace3f2d581e2f0467c81701624db41097624e3e6

SHA256
f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba

SHA512
8bdeb2df947aca2f321c8949c22b41a324ef0ea40fb7d2167246eb99e0a0d5d87e827578cc2277f9d5bea36ad7d23a61e0b1d2dbb152ccd5a2f5371bdecb5b75

Download Submit
\Program Files (x86)\Microsoft Services\symgr.exe

Filesize
185KB

MD5
87da96422cbb87d1d5dddf3020bdf113

SHA1
ace3f2d581e2f0467c81701624db41097624e3e6

SHA256
f9ca96cb7a06f5aef062c233e4059201d84c27011e6bef3da291c46d118e67ba

SHA512
8bdeb2df947aca2f321c8949c22b41a324ef0ea40fb7d2167246eb99e0a0d5d87e827578cc2277f9d5bea36ad7d23a61e0b1d2dbb152ccd5a2f5371bdecb5b75

Download Submit
\Users\Admin\AppData\Roaming\wd.exe

Filesize
6KB

MD5
8958d73eee15ff6566a97afb119b41d6

SHA1
f43d25ad3a587746108d2863c97512d7f15ce0b2

SHA256
a4897d3b6ab56138ece84246e7635df1c71adf900fedeaf9a724dac4bc17d4bd

SHA512
ca9d48cf490fbc7fec8d1814023cc5ca3b6a12a97165fb57781b72bf5211865c68468b16b223ae2495a472d713b95a544a357d199efff861f5ee390dbf16f255

Download Submit
memory/268-64-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/268-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/268-69-0x0000000074DB0000-0x000000007535B000-memory.dmp

Filesize
5.7MB

Download
memory/268-70-0x00000000021A5000-0x00000000021B6000-memory.dmp

Filesize
68KB

Download
memory/268-104-0x0000000074DB0000-0x000000007535B000-memory.dmp

Filesize
5.7MB

Download
memory/268-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/268-66-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/268-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/268-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/268-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/268-94-0x00000000021A5000-0x00000000021B6000-memory.dmp

Filesize
68KB

Download
memory/268-93-0x0000000074DB0000-0x000000007535B000-memory.dmp

Filesize
5.7MB

Download
memory/484-86-0x0000000074DB0000-0x000000007535B000-memory.dmp

Filesize
5.7MB

Download
memory/1700-102-0x0000000000C15000-0x0000000000C26000-memory.dmp

Filesize
68KB

Download
memory/1700-101-0x0000000074DB0000-0x000000007535B000-memory.dmp

Filesize
5.7MB

Download
memory/1700-92-0x0000000000C15000-0x0000000000C26000-memory.dmp

Filesize
68KB

Download
memory/1700-91-0x0000000074DB0000-0x000000007535B000-memory.dmp

Filesize
5.7MB

Download
memory/1768-68-0x0000000074DB0000-0x000000007535B000-memory.dmp

Filesize
5.7MB

Download
memory/1768-54-0x0000000076961000-0x0000000076963000-memory.dmp

Filesize
8KB

Download
memory/1768-55-0x0000000074DB0000-0x000000007535B000-memory.dmp

Filesize
5.7MB

Download
memory/1928-100-0x0000000074DB0000-0x000000007535B000-memory.dmp

Filesize
5.7MB

Download
memory/1928-103-0x0000000074DB0000-0x000000007535B000-memory.dmp

Filesize
5.7MB

Download