b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea

General

Target

b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe
Size

118KB
MD5

0b49a269b9f3f3a7b542bc147c1e03ee
SHA1

07f8977cb56940d209a01b0dd53ffa5acb67f5d3
SHA256

b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea
SHA512

f7dc59cd7716f9c2459b6b4697488dc51e485d46fd8a6a24aff4e2a1dece7b7167240bfcfd802a37da937068eaa41ef3b89c5def44e1d807ce6d89fdc9d8a1e2
SSDEEP

3072:bOjWuyt0ZsqsXOKofHfHTXQLzgvnzHPowYbvrjD/L7QPbg/Dr0T3rnXLHf7zjPPX:bIs9OKofHfHTXQLzgvnzHPowYbvrjD/M

Score

9^/10

Malware Config

Signatures

UPX dump on OEP (original entry point) 11 IoCs

resource	yara_rule
behavioral2/memory/2912-0-0x0000000000400000-0x000000000041F000-memory.dmp	UPX
behavioral2/files/0x000600000002326c-10.dat	UPX
behavioral2/files/0x000800000002340d-15.dat	UPX
behavioral2/memory/2912-18-0x0000000010000000-0x000000001000D000-memory.dmp	UPX
behavioral2/files/0x000800000001db0e-22.dat	UPX
behavioral2/memory/2912-21-0x0000000010000000-0x000000001000D000-memory.dmp	UPX
behavioral2/memory/1480-26-0x0000000000400000-0x0000000000409000-memory.dmp	UPX
behavioral2/memory/2912-24-0x0000000000400000-0x000000000041F000-memory.dmp	UPX
behavioral2/memory/708-30-0x0000000000400000-0x000000000041F000-memory.dmp	UPX
behavioral2/memory/708-36-0x0000000010000000-0x000000001000D000-memory.dmp	UPX
behavioral2/memory/708-38-0x0000000000400000-0x000000000041F000-memory.dmp	UPX

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000600000002326c-10.dat	acprotect

Executes dropped EXE 2 IoCs

pid	Process
1480	ctfmen.exe
708	smnss.exe

Loads dropped DLL 2 IoCs

pid	Process
2912	b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe
708	smnss.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ctfmen = "C:\\Windows\\system32\\ctfmen.exe"	b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\1	b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe
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	b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe

Drops file in System32 directory 12 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\smnss.exe	b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe
File created	C:\Windows\SysWOW64\satornas.dll	b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe
File created	C:\Windows\SysWOW64\zipfi.dll	smnss.exe
File created	C:\Windows\SysWOW64\ctfmen.exe	b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe
File opened for modification	C:\Windows\SysWOW64\ctfmen.exe	b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe
File created	C:\Windows\SysWOW64\shervans.dll	b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe
File created	C:\Windows\SysWOW64\grcopy.dll	b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe
File opened for modification	C:\Windows\SysWOW64\grcopy.dll	b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe
File created	C:\Windows\SysWOW64\zipfiaq.dll	smnss.exe
File opened for modification	C:\Windows\SysWOW64\shervans.dll	b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe
File opened for modification	C:\Windows\SysWOW64\satornas.dll	b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe
File created	C:\Windows\SysWOW64\smnss.exe	smnss.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1532	708	WerFault.exe	96

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E6FB5E20-DE35-11CF-9C87-00AA005127ED}\InprocServer32	b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E6FB5E20-DE35-11CF-9C87-00AA005127ED}	b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E6FB5E20-DE35-11CF-9C87-00AA005127ED}\InprocServer32\ = "C:\\Windows\\SysWow64\\shervans.dll"	b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E6FB5E20-DE35-11CF-9C87-00AA005127ED}\InprocServer32\ = "C:\\Windows\\SysWow64\\shervans.dll"	smnss.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	708	smnss.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2912 wrote to memory of 1480	2912	b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe	95
PID 2912 wrote to memory of 1480	2912	b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe	95
PID 2912 wrote to memory of 1480	2912	b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe	95
PID 1480 wrote to memory of 708	1480	ctfmen.exe	96
PID 1480 wrote to memory of 708	1480	ctfmen.exe	96
PID 1480 wrote to memory of 708	1480	ctfmen.exe	96

C:\Users\Admin\AppData\Local\Temp\b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.exe
"C:\Users\Admin\AppData\Local\Temp\b7eef5d97d6b20e5619107b5bd25a745d49633aede7bd3afc58a2181e7637bea.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:2912
- C:\Windows\SysWOW64\ctfmen.exe
  ctfmen.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:1480
- - 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
    - Modifies registry class
    - Suspicious use of AdjustPrivilegeToken
    PID:708
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 708 -s 1336
      4⤵
      Program crash
      PID:1532

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 708 -ip 708
1⤵
PID:1972

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\ctfmen.exe

Filesize
4KB

MD5
9d355cf00de5dac80b05f22a874fe442

SHA1
075dcf9b4c6dcf789fe53f389b0226d4d72f6d24

SHA256
90bbf663d2da13930c27acb9fca8120c5b4442f403c127fefd0ae3db739a5e9c

SHA512
b56dc21fc8924f901488fb34a486fd16097a097ec2531261bed4b93647adaa50467c702d61c15dd710b7d73e03c6ffd0388dbdfde410955f8de7952fb801b9ab

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

Filesize
118KB

MD5
8651db6b2afc73d339a675dc4cff5d4a

SHA1
1c283277f0ed3ede7894df5453349c92600d344f

SHA256
d4c0e8e831e7f1f1193626cec17c22a0318def62300b5347e61c9ad1d398967c

SHA512
fc412271097ff635affa4780c5bbcb4c944f52f14032d881b984903083fde96c621d28cef6bc71cdbc3989460c1a5b11c4e7e9cc1e13525189e0fe38485317fe

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

Filesize
183B

MD5
406ad9da61a4f96c18fab41159edff61

SHA1
dd0bdc65c0fda36517aca6ae395cd3e84ea7d43a

SHA256
fdfdc37a963a95fedddb624651c8ad96e1f57ffc9c14f06f84ba4f2e7300593c

SHA512
135c4021480ce23e7edc2c76aa3386958f10b0ee2a515d89a0e75b9e9eef4e65f370f4516952d777accdab71bc6177bd08cb01b2d35571824253cec5379ccbb0

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

Filesize
8KB

MD5
b83238efff2262ad24353edaacf108cf

SHA1
7c23d85e2a06a4cd780535bf9c80cff42d845744

SHA256
dd67f048c8e388bdea9cf02ead0b3cc3b373fded28084e8f7649dfafa64dfbd6

SHA512
9bb1774ad2ef88f648fc45f1cc40ba9420a8b9ad7b13e39b4c1d70394b274835094d985cf2829901819362e45e54b93f74b262f9cc9d34928239ae0d04aabc58

Download Submit
memory/708-30-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/708-36-0x0000000010000000-0x000000001000D000-memory.dmp

Filesize
52KB

Download
memory/708-38-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1480-26-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2912-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2912-18-0x0000000010000000-0x000000001000D000-memory.dmp

Filesize
52KB

Download
memory/2912-21-0x0000000010000000-0x000000001000D000-memory.dmp

Filesize
52KB

Download
memory/2912-24-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads