tofsee | 77b8a767e24da266946c335b5cfdcd599a14a7b13b78e335e29aedcd04c170a9

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11-10-2024 15:25

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General

Target

357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe
Size

164KB
MD5

357f765c8a9933ba3d7a4648ecd5d0f3
SHA1

b6c236cf63f9eb754af4174bdf15b06323899fbd
SHA256

77b8a767e24da266946c335b5cfdcd599a14a7b13b78e335e29aedcd04c170a9
SHA512

fab7ff68711f58c2247c4a670c6ac41af27f4b52fa1b5918c01ef9eecb4a1e751deabbc29d993053d92ef4f23d8794144deeba0583a53f88c0e86eb2e5c6ac96
SSDEEP

3072:oqkCzLqWf6CYXHnWNKmp9pj6l7fyp3ZOWHh1z/a:olCzL72Xn/mljtkUhpi

Score

10^/10

tofsee discovery persistence trojan

Malware Config

Extracted

Family

tofsee

94.75.255.140

rgtryhbgddtyh.biz

wertdghbyrukl.ch

Signatures

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

Deletes itself 1 IoCs

pid	Process
2912	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
2104	nrb.exe
2292	nrb.exe

Loads dropped DLL 3 IoCs

pid	Process
2020	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe
2020	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe
2104	nrb.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\nrb.exe\" /r"	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2156 set thread context of 2020	2156	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe	30
PID 2104 set thread context of 2292	2104	nrb.exe	34
PID 2292 set thread context of 2752	2292	nrb.exe	35

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

System Information Discovery
T1082

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	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nrb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nrb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
2156	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 2020	2156	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe	30
PID 2156 wrote to memory of 2020	2156	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe	30
PID 2156 wrote to memory of 2020	2156	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe	30
PID 2156 wrote to memory of 2020	2156	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe	30
PID 2156 wrote to memory of 2020	2156	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe	30
PID 2156 wrote to memory of 2020	2156	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe	30
PID 2156 wrote to memory of 2020	2156	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe	30
PID 2156 wrote to memory of 2020	2156	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe	30
PID 2156 wrote to memory of 2020	2156	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe	30
PID 2020 wrote to memory of 2104	2020	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe	31
PID 2020 wrote to memory of 2104	2020	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe	31
PID 2020 wrote to memory of 2104	2020	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe	31
PID 2020 wrote to memory of 2104	2020	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe	31
PID 2020 wrote to memory of 2912	2020	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe	32
PID 2020 wrote to memory of 2912	2020	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe	32
PID 2020 wrote to memory of 2912	2020	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe	32
PID 2020 wrote to memory of 2912	2020	357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe	32
PID 2104 wrote to memory of 2292	2104	nrb.exe	34
PID 2104 wrote to memory of 2292	2104	nrb.exe	34
PID 2104 wrote to memory of 2292	2104	nrb.exe	34
PID 2104 wrote to memory of 2292	2104	nrb.exe	34
PID 2104 wrote to memory of 2292	2104	nrb.exe	34
PID 2104 wrote to memory of 2292	2104	nrb.exe	34
PID 2104 wrote to memory of 2292	2104	nrb.exe	34
PID 2104 wrote to memory of 2292	2104	nrb.exe	34
PID 2104 wrote to memory of 2292	2104	nrb.exe	34
PID 2292 wrote to memory of 2752	2292	nrb.exe	35
PID 2292 wrote to memory of 2752	2292	nrb.exe	35
PID 2292 wrote to memory of 2752	2292	nrb.exe	35
PID 2292 wrote to memory of 2752	2292	nrb.exe	35
PID 2292 wrote to memory of 2752	2292	nrb.exe	35
PID 2292 wrote to memory of 2752	2292	nrb.exe	35

C:\Users\Admin\AppData\Local\Temp\357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2156
- C:\Users\Admin\AppData\Local\Temp\357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\357f765c8a9933ba3d7a4648ecd5d0f3_JaffaCakes118.exe"
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2020
- - C:\Users\Admin\nrb.exe
    "C:\Users\Admin\nrb.exe" /r
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2104
  - - C:\Users\Admin\nrb.exe
      "C:\Users\Admin\nrb.exe" /r
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2292
    - - C:\Windows\SysWOW64\svchost.exe
        
        svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2752
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\1631.bat" "
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2912

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

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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Downloads

C:\Users\Admin\AppData\Local\Temp\1631.bat

Filesize
117B

MD5
d02e3ae2a394e5ce37bf1f37f4956534

SHA1
9580772968f9e5063c001262f3296a1f12a0e405

SHA256
5e5679fdd2ae4a4879d2dd2649e26cab703ac807bf6f27cd25989c1c9d9dbaa3

SHA512
a328956bf1979b67ff9818b8b618f2a9ebbce71d2e7718e2fbb75687b5931d270300b97adf5ab82555d2da699170300925972b0f32e6f8ec9f4974d83983f6e1

Download Submit
C:\Users\Admin\nrb.exe

Filesize
164KB

MD5
357f765c8a9933ba3d7a4648ecd5d0f3

SHA1
b6c236cf63f9eb754af4174bdf15b06323899fbd

SHA256
77b8a767e24da266946c335b5cfdcd599a14a7b13b78e335e29aedcd04c170a9

SHA512
fab7ff68711f58c2247c4a670c6ac41af27f4b52fa1b5918c01ef9eecb4a1e751deabbc29d993053d92ef4f23d8794144deeba0583a53f88c0e86eb2e5c6ac96

Download Submit
memory/2020-12-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2020-4-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2020-6-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2020-11-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2020-8-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2020-9-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2020-30-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2020-0-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2292-47-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/2292-54-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/2292-46-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2752-51-0x00000000000C0000-0x00000000000D0000-memory.dmp

Filesize
64KB

Download
memory/2752-49-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2752-56-0x00000000000C0000-0x00000000000D0000-memory.dmp

Filesize
64KB

Download
memory/2752-59-0x00000000000C0000-0x00000000000D0000-memory.dmp

Filesize
64KB

Download
memory/2752-62-0x00000000000C0000-0x00000000000D0000-memory.dmp

Filesize
64KB

Download
memory/2752-63-0x00000000000C0000-0x00000000000D0000-memory.dmp

Filesize
64KB

Download
memory/2752-64-0x00000000000C0000-0x00000000000D0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads