6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36

General

Target

6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe
Size

118KB
MD5

03dbbcfe6e37ed37ddd6842032238980
SHA1

09a9780d93144bf5ad207e3fd31415b9a46feea7
SHA256

6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36
SHA512

086e7ca4a69fee572c178c340d38c3b42119389fc44a0ec807ddf1209c769ad5e7b393b584ba3b2ec43cf2c26905fa382fcc222a3455b26604fe0111dacd4d43
SSDEEP

3072:nOjWuyt0ZsqsXOKofHfHTXQLzgvnzHPowYbvrjD/L7QPbg/Dr0T3rnXLHf7zjPPb:nIs9OKofHfHTXQLzgvnzHPowYbvrjD/m

Score

7^/10

persistence

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

Processes:

resource	yara_rule
\Windows\SysWOW64\shervans.dll	acprotect

Executes dropped EXE 2 IoCs

Processes:

ctfmen.exesmnss.exe

pid process

2268 ctfmen.exe
2660 smnss.exe

pid	process
2268	ctfmen.exe
2660	smnss.exe

Loads dropped DLL 6 IoCs

Processes:

6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exectfmen.exesmnss.exe

pid	process
2180	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe
2180	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe
2180	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe
2268	ctfmen.exe
2268	ctfmen.exe
2660	smnss.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exesmnss.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ctfmen = "C:\\Windows\\system32\\ctfmen.exe"	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ctfmen = "C:\\Windows\\system32\\ctfmen.exe"	smnss.exe

Maps connected drives based on registry 3 TTPs 6 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

smnss.exe6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	smnss.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	smnss.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\1	smnss.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\1	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe

Drops file in System32 directory 12 IoCs

Processes:

smnss.exe6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe

description	ioc	process
File created	C:\Windows\SysWOW64\zipfiaq.dll	smnss.exe
File created	C:\Windows\SysWOW64\smnss.exe	smnss.exe
File created	C:\Windows\SysWOW64\ctfmen.exe	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe
File created	C:\Windows\SysWOW64\shervans.dll	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe
File created	C:\Windows\SysWOW64\smnss.exe	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe
File opened for modification	C:\Windows\SysWOW64\satornas.dll	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe
File created	C:\Windows\SysWOW64\zipfi.dll	smnss.exe
File opened for modification	C:\Windows\SysWOW64\ctfmen.exe	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe
File created	C:\Windows\SysWOW64\grcopy.dll	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe
File opened for modification	C:\Windows\SysWOW64\grcopy.dll	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe
File opened for modification	C:\Windows\SysWOW64\shervans.dll	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe
File created	C:\Windows\SysWOW64\satornas.dll	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe

Drops file in Program Files directory 55 IoCs

Processes:

smnss.exe

description	ioc	process
File opened for modification	C:\Program Files\7-Zip\Lang\el.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\es.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\fy.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\kk.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\lt.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\mng.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ba.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\hi.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\hr.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\be.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\da.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\gl.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\az.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\eo.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\eu.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\it.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ja.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ka.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\an.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\co.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ext.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\kaa.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ca.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\de.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\et.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\fi.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\io.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\mn.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\bg.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\cs.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\fur.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\br.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\is.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\lij.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\lv.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ko.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ga.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\id.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ku.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\mk.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ast.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\he.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\kab.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ku-ckb.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\bn.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\fa.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\fr.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\gu.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\hy.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\af.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\cy.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\History.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ar.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ky.txt	smnss.exe
File opened for modification	C:\Program Files\7-Zip\Lang\hu.txt	smnss.exe

Modifies registry class 6 IoCs

Processes:

6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exesmnss.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E6FB5E20-DE35-11CF-9C87-00AA005127ED}\InprocServer32\ = "C:\\Windows\\SysWow64\\shervans.dll"	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E6FB5E20-DE35-11CF-9C87-00AA005127ED}\InprocServer32\ = "C:\\Windows\\SysWow64\\shervans.dll"	smnss.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E6FB5E20-DE35-11CF-9C87-00AA005127ED}\InprocServer32	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E6FB5E20-DE35-11CF-9C87-00AA005127ED}	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

smnss.exe

description pid process

Token: SeDebugPrivilege 2660 smnss.exe

description	pid	process
Token: SeDebugPrivilege	2660	smnss.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exectfmen.exe

description	pid	process	target process
PID 2180 wrote to memory of 2268	2180	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe	ctfmen.exe
PID 2180 wrote to memory of 2268	2180	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe	ctfmen.exe
PID 2180 wrote to memory of 2268	2180	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe	ctfmen.exe
PID 2180 wrote to memory of 2268	2180	6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe	ctfmen.exe
PID 2268 wrote to memory of 2660	2268	ctfmen.exe	smnss.exe
PID 2268 wrote to memory of 2660	2268	ctfmen.exe	smnss.exe
PID 2268 wrote to memory of 2660	2268	ctfmen.exe	smnss.exe
PID 2268 wrote to memory of 2660	2268	ctfmen.exe	smnss.exe

C:\Users\Admin\AppData\Local\Temp\6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe
"C:\Users\Admin\AppData\Local\Temp\6b31cab8a40ec2efc81f957d88d01bb3df5e525397b095d09bed96e645ef7b36.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Maps connected drives based on registry
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2180

C:\Windows\SysWOW64\ctfmen.exe
ctfmen.exe
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2268

C:\Windows\SysWOW64\smnss.exe
C:\Windows\system32\smnss.exe
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Maps connected drives based on registry
- Drops file in System32 directory
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
PID:2660

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Windows\SysWOW64\satornas.dll
Filesize
183B

MD5
77b1ea7ab10ee4d3129ccf35d3d0a882

SHA1
e12b3940877f5d6e0a60deb6a16d626246f034e8

SHA256
570a073604bcfef58ac59cf9daab699afbbe95cb05221bae9b3b95b8f2adf247

SHA512
ea418ec3e424ccec435bca3bde0154afb106435b7e34de00c4f9de9cc9dd9c5ab4a3777019e1805d20eabde7083d411c944434b07442bb6f5837e8a0c1b1abad

Download Submit
\Windows\SysWOW64\ctfmen.exe
Filesize
4KB

MD5
40ce0c98aa565d246174fc404558ea91

SHA1
6bdf6fd3c769e9ec86104801efb14b75a84778da

SHA256
fd09cdef2ec971c8a0383fb6f749edaf324aa5f220fc592f87c905ee1fa4c42e

SHA512
5f6ecabd5445a50628d71e081c7fb64e5b86b5c80e7df6ee0969706944c402c9deb196a2cfa22db90e859a534b7b4ca2325609f19417d31dfc64435c5c2003ed

Download Submit
\Windows\SysWOW64\shervans.dll
Filesize
8KB

MD5
4e2b674f7039b51c3a0661b47bf26da8

SHA1
86983a9e3dcd8291b08df750059d8ac74f4bf8cc

SHA256
c3acd49b06d1c94431d024e1ebdb4a4338b5747832aaf26f9c6fe41b613dabca

SHA512
6ef21cb7206ab9733435b2d4fb89a340501efe468dbe09b8c756408fc3ac4b7a7fa6aba520d52a7dcb4145f9c97c9ac83fe33986d90def5ba8455a8b1df3e30b

Download Submit
\Windows\SysWOW64\smnss.exe
Filesize
118KB

MD5
f7aa07f9a9e514f1ff818a629a3d7915

SHA1
de3cea9baa0e7d5052538d376c86c79b78bf6cbe

SHA256
4f7a7465e7b02cd622ae792ceb18e6df60ec1f9ea7ad4d37a5645dec047934c7

SHA512
725b6589a42ed38014433cb5e1748c70626cf86a45a3c551cbc4795da02fa83596fe16faaa83d212599f2bbdecbb449f4bd98fc07844d9ae9ae3eadc2559bdeb

Download Submit
memory/2180-26-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2180-27-0x0000000010000000-0x000000001000D000-memory.dmp

Filesize
52KB

Download
memory/2180-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2180-18-0x00000000002D0000-0x00000000002D9000-memory.dmp

Filesize
36KB

Download
memory/2180-16-0x0000000010000000-0x000000001000D000-memory.dmp

Filesize
52KB

Download
memory/2268-32-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2660-34-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2660-41-0x0000000010000000-0x000000001000D000-memory.dmp

Filesize
52KB

Download
memory/2660-43-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads