tofsee | 305d4a8940fafcbbea69953d2331f5d32eccb57f4ed86b5068195763c429e70c

Analysis

max time kernel
149s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08-10-2024 21:47

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General

Target

25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe
Size

93KB
MD5

25ec7bc83646129d0954a3b66df90831
SHA1

b2ae78deb90c0854be749bf5b87d02f92c480083
SHA256

305d4a8940fafcbbea69953d2331f5d32eccb57f4ed86b5068195763c429e70c
SHA512

38c32444bcf984fc21b28e9090e061f4d168c0be690b2e3275c6ad69f6b2a5b886583232b1537740360ede6a30978e9c1d80a777c2504fab1c87002163d91648
SSDEEP

1536:F3xa6sMWEdTp18p3qZYMedp9bdDkasbKm3xf6VpcI0nYDWRhXgXl:FhVdN189qZYM0GaRm3FQpuYDWvXgV

Score

10^/10

tofsee discovery persistence trojan

Malware Config

Extracted

Family

tofsee

185.4.227.76

188.165.132.183

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
2764	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
2096	rrazlxkm.exe
2288	rrazlxkm.exe

Loads dropped DLL 3 IoCs

pid	Process
2376	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe
2376	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe
2096	rrazlxkm.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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\rrazlxkm.exe\""	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2548 set thread context of 2376	2548	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe	30
PID 2096 set thread context of 2288	2096	rrazlxkm.exe	32
PID 2288 set thread context of 3012	2288	rrazlxkm.exe	33

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rrazlxkm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rrazlxkm.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 2548 wrote to memory of 2376	2548	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe	30
PID 2548 wrote to memory of 2376	2548	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe	30
PID 2548 wrote to memory of 2376	2548	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe	30
PID 2548 wrote to memory of 2376	2548	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe	30
PID 2548 wrote to memory of 2376	2548	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe	30
PID 2548 wrote to memory of 2376	2548	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe	30
PID 2548 wrote to memory of 2376	2548	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe	30
PID 2548 wrote to memory of 2376	2548	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe	30
PID 2548 wrote to memory of 2376	2548	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe	30
PID 2548 wrote to memory of 2376	2548	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe	30
PID 2376 wrote to memory of 2096	2376	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe	31
PID 2376 wrote to memory of 2096	2376	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe	31
PID 2376 wrote to memory of 2096	2376	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe	31
PID 2376 wrote to memory of 2096	2376	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe	31
PID 2096 wrote to memory of 2288	2096	rrazlxkm.exe	32
PID 2096 wrote to memory of 2288	2096	rrazlxkm.exe	32
PID 2096 wrote to memory of 2288	2096	rrazlxkm.exe	32
PID 2096 wrote to memory of 2288	2096	rrazlxkm.exe	32
PID 2096 wrote to memory of 2288	2096	rrazlxkm.exe	32
PID 2096 wrote to memory of 2288	2096	rrazlxkm.exe	32
PID 2096 wrote to memory of 2288	2096	rrazlxkm.exe	32
PID 2096 wrote to memory of 2288	2096	rrazlxkm.exe	32
PID 2096 wrote to memory of 2288	2096	rrazlxkm.exe	32
PID 2096 wrote to memory of 2288	2096	rrazlxkm.exe	32
PID 2288 wrote to memory of 3012	2288	rrazlxkm.exe	33
PID 2288 wrote to memory of 3012	2288	rrazlxkm.exe	33
PID 2288 wrote to memory of 3012	2288	rrazlxkm.exe	33
PID 2288 wrote to memory of 3012	2288	rrazlxkm.exe	33
PID 2288 wrote to memory of 3012	2288	rrazlxkm.exe	33
PID 2288 wrote to memory of 3012	2288	rrazlxkm.exe	33
PID 2376 wrote to memory of 2764	2376	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe	34
PID 2376 wrote to memory of 2764	2376	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe	34
PID 2376 wrote to memory of 2764	2376	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe	34
PID 2376 wrote to memory of 2764	2376	25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe	34

C:\Users\Admin\AppData\Local\Temp\25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2548
- C:\Users\Admin\AppData\Local\Temp\25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\25ec7bc83646129d0954a3b66df90831_JaffaCakes118.exe"
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2376
- - C:\Users\Admin\rrazlxkm.exe
    "C:\Users\Admin\rrazlxkm.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2096
  - - C:\Users\Admin\rrazlxkm.exe
      "C:\Users\Admin\rrazlxkm.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2288
    - - C:\Windows\SysWOW64\svchost.exe
        
        svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:3012
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\1884.bat" "
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2764

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\1884.bat

Filesize
266B

MD5
a70b6b1876dccb7a8c04f6d34677de8d

SHA1
d282fdc54fd7ee8719734ae3ae6edb07a507e04c

SHA256
a266cce8cb331a97d78f94654800a44f28acc026d43a8243347a27024d36c31f

SHA512
cf1de41814db323a3f9d4231da30f11ba5f49b43c36d972d25af6af7329bad59e797d3389174398f4cdaca21e4accdde343deca900232e739bcb35fbb42c61c9

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

Filesize
93KB

MD5
25ec7bc83646129d0954a3b66df90831

SHA1
b2ae78deb90c0854be749bf5b87d02f92c480083

SHA256
305d4a8940fafcbbea69953d2331f5d32eccb57f4ed86b5068195763c429e70c

SHA512
38c32444bcf984fc21b28e9090e061f4d168c0be690b2e3275c6ad69f6b2a5b886583232b1537740360ede6a30978e9c1d80a777c2504fab1c87002163d91648

Download Submit
memory/2096-29-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2096-46-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2288-50-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2376-27-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2376-9-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2376-17-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2376-4-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2376-5-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2376-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2376-13-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2376-28-0x0000000000330000-0x000000000034E000-memory.dmp

Filesize
120KB

Download
memory/2376-7-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2376-1-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2548-15-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2548-0-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/3012-76-0x0000000000120000-0x0000000000131000-memory.dmp

Filesize
68KB

Download
memory/3012-63-0x0000000000120000-0x0000000000131000-memory.dmp

Filesize
68KB

Download
memory/3012-54-0x0000000000120000-0x0000000000131000-memory.dmp

Filesize
68KB

Download
memory/3012-64-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/3012-52-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3012-65-0x0000000000120000-0x0000000000131000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads