92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8

General

Target

92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe
Size

147KB
MD5

56d2523afd8158dc25ad1f8cf6a4247f
SHA1

3a23101dfa485cacfe9b3507bebca127b5ded85f
SHA256

92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8
SHA512

2b0cc5e739abc64368e039e45b77cab411991ff5b2895e3e5f2b87ed056b306a143f077a5ec29f9b76623b21733ad4a1d8b13e5c6dfd883ae65bc43d9caaa088
SSDEEP

3072:LOjWuyt0ZsqsXOKofHfHTXQLzgvnzHPowYbvrjD/L7QPbg/Dr0T3rnXLHf7zjPP1:LIs9OKofHfHTXQLzgvnzHPowYbvrjD/C

Score

9^/10

Malware Config

Signatures

UPX dump on OEP (original entry point) 11 IoCs

resource	yara_rule
behavioral2/memory/3536-0-0x0000000000400000-0x000000000041F000-memory.dmp	UPX
behavioral2/files/0x000b0000000233f4-10.dat	UPX
behavioral2/files/0x000900000002342a-15.dat	UPX
behavioral2/memory/3536-18-0x0000000010000000-0x000000001000D000-memory.dmp	UPX
behavioral2/files/0x001c00000001e97e-20.dat	UPX
behavioral2/memory/2304-26-0x0000000000400000-0x0000000000409000-memory.dmp	UPX
behavioral2/memory/3536-21-0x0000000010000000-0x000000001000D000-memory.dmp	UPX
behavioral2/memory/3536-24-0x0000000000400000-0x000000000041F000-memory.dmp	UPX
behavioral2/memory/1768-30-0x0000000000400000-0x000000000041F000-memory.dmp	UPX
behavioral2/memory/1768-36-0x0000000010000000-0x000000001000D000-memory.dmp	UPX
behavioral2/memory/1768-38-0x0000000000400000-0x000000000041F000-memory.dmp	UPX

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000b0000000233f4-10.dat	acprotect

Executes dropped EXE 2 IoCs

pid	Process
2304	ctfmen.exe
1768	smnss.exe

Loads dropped DLL 2 IoCs

pid	Process
3536	92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe
1768	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"	smnss.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ctfmen = "C:\\Windows\\system32\\ctfmen.exe"	92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.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 opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\1	92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.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

Drops file in System32 directory 12 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ctfmen.exe	92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe
File created	C:\Windows\SysWOW64\shervans.dll	92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe
File created	C:\Windows\SysWOW64\grcopy.dll	92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe
File opened for modification	C:\Windows\SysWOW64\shervans.dll	92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe
File created	C:\Windows\SysWOW64\satornas.dll	92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe
File created	C:\Windows\SysWOW64\zipfi.dll	smnss.exe
File created	C:\Windows\SysWOW64\zipfiaq.dll	smnss.exe
File created	C:\Windows\SysWOW64\smnss.exe	smnss.exe
File opened for modification	C:\Windows\SysWOW64\ctfmen.exe	92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe
File opened for modification	C:\Windows\SysWOW64\grcopy.dll	92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe
File created	C:\Windows\SysWOW64\smnss.exe	92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe
File opened for modification	C:\Windows\SysWOW64\satornas.dll	92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2040	1768	WerFault.exe	93

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E6FB5E20-DE35-11CF-9C87-00AA005127ED}\InprocServer32	92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E6FB5E20-DE35-11CF-9C87-00AA005127ED}	92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E6FB5E20-DE35-11CF-9C87-00AA005127ED}\InprocServer32\ = "C:\\Windows\\SysWow64\\shervans.dll"	92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.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	1768	smnss.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3536 wrote to memory of 2304	3536	92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe	92
PID 3536 wrote to memory of 2304	3536	92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe	92
PID 3536 wrote to memory of 2304	3536	92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe	92
PID 2304 wrote to memory of 1768	2304	ctfmen.exe	93
PID 2304 wrote to memory of 1768	2304	ctfmen.exe	93
PID 2304 wrote to memory of 1768	2304	ctfmen.exe	93

C:\Users\Admin\AppData\Local\Temp\92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.exe
"C:\Users\Admin\AppData\Local\Temp\92aa5c5b742b0a3316f6875c819e4dbbf01c337c43aeff16f6dc09a0bbd778e8.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:3536
- C:\Windows\SysWOW64\ctfmen.exe
  ctfmen.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:2304
- - 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:1768
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1768 -s 1336
      4⤵
      Program crash
      PID:2040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1768 -ip 1768
1⤵
PID:2908

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
153757920e76d5e7a5639a47f59a26f7

SHA1
92b1560064a5179ff773c0d50d4b6a59411ff0d9

SHA256
9b5990c7cf88f0bdbbe0ea346c88f8c7ca66a773c6785cba47276e94a4c0af61

SHA512
855db3bd23c9afcc6d2b18f928962a2c1d75331d7c99ad922214b069c70917cc27fd4af18853747d75c4078166cb725853757967b6bc0ed1fafc05188e5b5f79

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

Filesize
147KB

MD5
17d9cca71ffaf56f8bfee48fc9abb44d

SHA1
543c53255393a64436664e8843c5b4fbd93ce1fe

SHA256
7a9419deea78deb22b3adc0ab3951bd51f9bfd4be79595d27c70588e0d0b6d87

SHA512
1f3880bb734853a3af235a7c2894e16332341d606ff2f5596639ebb0f6da48f05f7bf364278fbc395caa3ea74b85a73ffbbddef89d222efd7e987c2dee3c6459

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

Filesize
183B

MD5
ac38bbf2d9724c8af61ba3f88551a73f

SHA1
9a0798fc44981f7ff1621af8f9af78a09f404f24

SHA256
8f8e6b9253f1fd64c8a505e2f1faf0355b2286e235290ec13a6ad3a2a8c17f40

SHA512
8a95d3d1633ae0ebf92c8eff45cf81a865c1161176984f8fcec8e09c23b69537aad7e713580b6927327c82eb5120b745035c88ee899c3ea314b63c56987d94cd

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

Filesize
8KB

MD5
fcdfd2701b6d6f2d2e59426b6bfda64e

SHA1
dca7d31299da59d5266bc0dfc7286dd02ccc0716

SHA256
98558adae220416b0e1c6387064009cbda641520b40c723d8c71463377b0b23a

SHA512
599c66a2096c398fb5bbb6eb09e529da394537dfa6e99853c04e53a59dcc9a30a3dadb87b41847c0451c2b6d90a004de6d955a655617abc0647d1bf79b4b8934

Download Submit
memory/1768-30-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1768-36-0x0000000010000000-0x000000001000D000-memory.dmp

Filesize
52KB

Download
memory/1768-38-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2304-26-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3536-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3536-18-0x0000000010000000-0x000000001000D000-memory.dmp

Filesize
52KB

Download
memory/3536-21-0x0000000010000000-0x000000001000D000-memory.dmp

Filesize
52KB

Download
memory/3536-24-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads