tofsee | a31292a3266ce5ccac7c99ec719fd689e1f0d21cd06045aec3a55a3e9907443a

Analysis

max time kernel
142s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18/10/2024, 03:14

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General

Target
552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe
Size 98KB
Sample241018-drmtgstflc
SHA256 a31292a3266ce5ccac7c99ec719fd689e1f0d21cd06045aec3a55a3e9907443a
MD5 552d5a7430ab696b3a5096cc2fa285d7
SHA1 e7d2191411b7f68f944e2987747efef2a115492f
SHA512 9ed17726f8833663fd2043264d6109cccc3a2eae67f2754fca91aaaa23fcba7efd2dff26dfb1fea994fd8b127e5796000ac98a5055e2b9f15bcf6d920e69d88e
SSDEEP 1536:YoM78a0P/mqqj7HHLW6a9DPeht5vmiKRmjTfHtLyv/Hd9gd4xZcYcTXwG:8V3i6a0htJmrCHto/9U4xxcTXp
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee discovery persistence trojan

Malware Config

Extracted

Family

tofsee

64.20.54.234
rgtryhbgddtyh.biz
wertdghbyrukl.ch

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
3660	pbcvfp.exe
4104	pbcvfp.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\pbcvfp.exe\" /r"	552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4328 set thread context of 4508	4328	552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe	84
PID 3660 set thread context of 4104	3660	pbcvfp.exe	86
PID 4104 set thread context of 4628	4104	pbcvfp.exe	87

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1664	4628	WerFault.exe	87

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pbcvfp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pbcvfp.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 4328 wrote to memory of 4508	4328	552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe	84
PID 4328 wrote to memory of 4508	4328	552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe	84
PID 4328 wrote to memory of 4508	4328	552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe	84
PID 4328 wrote to memory of 4508	4328	552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe	84
PID 4328 wrote to memory of 4508	4328	552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe	84
PID 4328 wrote to memory of 4508	4328	552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe	84
PID 4328 wrote to memory of 4508	4328	552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe	84
PID 4328 wrote to memory of 4508	4328	552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe	84
PID 4508 wrote to memory of 3660	4508	552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe	85
PID 4508 wrote to memory of 3660	4508	552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe	85
PID 4508 wrote to memory of 3660	4508	552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe	85
PID 3660 wrote to memory of 4104	3660	pbcvfp.exe	86
PID 3660 wrote to memory of 4104	3660	pbcvfp.exe	86
PID 3660 wrote to memory of 4104	3660	pbcvfp.exe	86
PID 3660 wrote to memory of 4104	3660	pbcvfp.exe	86
PID 3660 wrote to memory of 4104	3660	pbcvfp.exe	86
PID 3660 wrote to memory of 4104	3660	pbcvfp.exe	86
PID 3660 wrote to memory of 4104	3660	pbcvfp.exe	86
PID 3660 wrote to memory of 4104	3660	pbcvfp.exe	86
PID 4104 wrote to memory of 4628	4104	pbcvfp.exe	87
PID 4104 wrote to memory of 4628	4104	pbcvfp.exe	87
PID 4104 wrote to memory of 4628	4104	pbcvfp.exe	87
PID 4104 wrote to memory of 4628	4104	pbcvfp.exe	87
PID 4104 wrote to memory of 4628	4104	pbcvfp.exe	87
PID 4508 wrote to memory of 2448	4508	552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe	91
PID 4508 wrote to memory of 2448	4508	552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe	91
PID 4508 wrote to memory of 2448	4508	552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe	91

C:\Users\Admin\AppData\Local\Temp\552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4328
- C:\Users\Admin\AppData\Local\Temp\552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\552d5a7430ab696b3a5096cc2fa285d7_JaffaCakes118.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4508
- - C:\Users\Admin\pbcvfp.exe
    "C:\Users\Admin\pbcvfp.exe" /r
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3660
  - - C:\Users\Admin\pbcvfp.exe
      "C:\Users\Admin\pbcvfp.exe" /r
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:4104
    - - C:\Windows\SysWOW64\svchost.exe
        
        svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:4628
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4628 -s 320
        6⤵
        Program crash
        
        PID:1664
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\6282.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4628 -ip 4628
1⤵
PID:3852

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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6282.bat

Path C:\Users\Admin\AppData\Local\Temp\6282.bat
Size 117B
SHA256 6005d877577dd1d19298357485bd9b30afc4460c6cde4c70f679f59619adad16
MD5 3ef5baadd346e29b3d8fd1ee14e0a33b
SHA1 9bfeda2846a21b1b1d6a775ba26fc887d00cd211
SHA512 98f925a1ea5633019df608a9053bdb0ed3673de7964272e4f05dde8992b7f050e9e5ef0c933c51a96fc54822635ec4004cdfda76ef3ae4222fc16f83e33886a4
MD5 SHA1 SHA512

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pbcvfp.exe

Path C:\Users\Admin\pbcvfp.exe
Size 98KB
SHA256 a31292a3266ce5ccac7c99ec719fd689e1f0d21cd06045aec3a55a3e9907443a
MD5 552d5a7430ab696b3a5096cc2fa285d7
SHA1 e7d2191411b7f68f944e2987747efef2a115492f
SHA512 9ed17726f8833663fd2043264d6109cccc3a2eae67f2754fca91aaaa23fcba7efd2dff26dfb1fea994fd8b127e5796000ac98a5055e2b9f15bcf6d920e69d88e
SSDEEP 1536:YoM78a0P/mqqj7HHLW6a9DPeht5vmiKRmjTfHtLyv/Hd9gd4xZcYcTXwG:8V3i6a0htJmrCHto/9U4xxcTXp
MD5 SHA1 SHA512 SSDEEP

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memory/4104-12-0x0000000000400000-0x0000000000410000-memory.dmp

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memory/4508-0-0x0000000000400000-0x0000000000410000-memory.dmp

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memory/4508-2-0x0000000000400000-0x0000000000410000-memory.dmp

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memory/4508-24-0x0000000000400000-0x0000000000410000-memory.dmp

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memory/4628-13-0x0000000000410000-0x0000000000420000-memory.dmp

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memory/4628-20-0x0000000000410000-0x0000000000420000-memory.dmp

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memory/4628-27-0x0000000000410000-0x0000000000420000-memory.dmp

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memory/4628-28-0x00000000023A0000-0x00000000023A1000-memory.dmp

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memory/4628-29-0x0000000000410000-0x0000000000420000-memory.dmp

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memory/4628-30-0x0000000000410000-0x0000000000420000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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