tofsee | 270e15b50f3eb2895ff790fba1b9137672639bbb75d08520c26933364ab010cb

General

Target

JaffaCakes118_78ecd98f4df225f36ad1bf18814c8360.exe
Size

94KB
MD5

78ecd98f4df225f36ad1bf18814c8360
SHA1

30e99fdb525eb0163e76c943e6db50b16dce38f7
SHA256

270e15b50f3eb2895ff790fba1b9137672639bbb75d08520c26933364ab010cb
SHA512

b3f3a9be6d66f697f262383553015be43bb427853399a1f774d4418d202898dd2bbdc1ef7edd899c576020746d6f2b6cd0c78d6318eb03f74a525cf8e6816aa6
SSDEEP

1536:HaT5HC7L9vnEexvevA17dfTWmU6WmQt8upcr/d:HaT5aLaexbditRtsrF

Score

10^/10

tofsee discovery persistence trojan

Malware Config

Extracted

Family

tofsee

C2

91.218.38.211

188.130.237.71

185.25.48.10

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
Tofsee family
tofsee

Deletes itself 1 IoCs

pid	Process
2928	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2272	ansfkxqy.exe

Loads dropped DLL 2 IoCs

pid	Process
2376	JaffaCakes118_78ecd98f4df225f36ad1bf18814c8360.exe
2376	JaffaCakes118_78ecd98f4df225f36ad1bf18814c8360.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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\ansfkxqy.exe\""	JaffaCakes118_78ecd98f4df225f36ad1bf18814c8360.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2272 set thread context of 2824	2272	ansfkxqy.exe	31

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 5 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_78ecd98f4df225f36ad1bf18814c8360.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ansfkxqy.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2888	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2888	PING.EXE

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2376	JaffaCakes118_78ecd98f4df225f36ad1bf18814c8360.exe
2272	ansfkxqy.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 2272	2376	JaffaCakes118_78ecd98f4df225f36ad1bf18814c8360.exe	30
PID 2376 wrote to memory of 2272	2376	JaffaCakes118_78ecd98f4df225f36ad1bf18814c8360.exe	30
PID 2376 wrote to memory of 2272	2376	JaffaCakes118_78ecd98f4df225f36ad1bf18814c8360.exe	30
PID 2376 wrote to memory of 2272	2376	JaffaCakes118_78ecd98f4df225f36ad1bf18814c8360.exe	30
PID 2272 wrote to memory of 2824	2272	ansfkxqy.exe	31
PID 2272 wrote to memory of 2824	2272	ansfkxqy.exe	31
PID 2272 wrote to memory of 2824	2272	ansfkxqy.exe	31
PID 2272 wrote to memory of 2824	2272	ansfkxqy.exe	31
PID 2272 wrote to memory of 2824	2272	ansfkxqy.exe	31
PID 2272 wrote to memory of 2824	2272	ansfkxqy.exe	31
PID 2376 wrote to memory of 2928	2376	JaffaCakes118_78ecd98f4df225f36ad1bf18814c8360.exe	32
PID 2376 wrote to memory of 2928	2376	JaffaCakes118_78ecd98f4df225f36ad1bf18814c8360.exe	32
PID 2376 wrote to memory of 2928	2376	JaffaCakes118_78ecd98f4df225f36ad1bf18814c8360.exe	32
PID 2376 wrote to memory of 2928	2376	JaffaCakes118_78ecd98f4df225f36ad1bf18814c8360.exe	32
PID 2928 wrote to memory of 2888	2928	cmd.exe	34
PID 2928 wrote to memory of 2888	2928	cmd.exe	34
PID 2928 wrote to memory of 2888	2928	cmd.exe	34
PID 2928 wrote to memory of 2888	2928	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_78ecd98f4df225f36ad1bf18814c8360.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_78ecd98f4df225f36ad1bf18814c8360.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2376
- C:\Users\Admin\ansfkxqy.exe
  "C:\Users\Admin\ansfkxqy.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of UnmapMainImage
  - Suspicious use of WriteProcessMemory
  PID:2272
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2824
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\8341.bat" "
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2928
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2888

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

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\8341.bat

Filesize
266B

MD5
dc60bce479e37f866293544c30be89ab

SHA1
456871ca6ce48d6ee623af0bc5bfed95fd49fb2d

SHA256
8f76a747bcf1c273091148c2609a90adb0228b0c25c3943088eb92e1b635ac83

SHA512
59cb99cf342c09df0a76362b50fb998e9fe4d35ee8e53e56e1bfdf27b983910c2348b3fdecb59fc957fbea25f19620b45b02c64ad92853dec172137029722aee

Download Submit
\Users\Admin\ansfkxqy.exe

Filesize
41.6MB

MD5
9b9cf14682fbeb0b143df0c263ad3fd2

SHA1
33b474c364a9bd6daefd8bc6d5fd1a76fd0543ff

SHA256
ed7412551cf47c169fa71fa46f037f1c8529665f9be41118b22930862934c455

SHA512
d7b60871880de4509bdb3cd7d77d22caee9c1a464f830717e26d9a672c6e033731c63a2106ce2041eee838e7e4b39694823fd7bfeb3ccca65cec52d5c650ffd2

Download Submit
memory/2272-25-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2272-12-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2272-11-0x0000000000240000-0x0000000000252000-memory.dmp

Filesize
72KB

Download
memory/2376-1-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2376-30-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2376-38-0x00000000002D0000-0x00000000002E2000-memory.dmp

Filesize
72KB

Download
memory/2376-0-0x00000000002D0000-0x00000000002E2000-memory.dmp

Filesize
72KB

Download
memory/2824-34-0x00000000000A0000-0x00000000000A1000-memory.dmp

Filesize
4KB

Download
memory/2824-21-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2824-20-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2824-29-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2824-28-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2824-37-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2824-23-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2824-39-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads