tofsee | 6b106fead48601e7842cdcf7d3220e4b9da5f82fbc189a4b83401ee5b13a496b

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04/04/2024, 01:35

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General

Target
ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe
Size 12.8MB
Sample240404-bznpmsba2v
SHA256 6b106fead48601e7842cdcf7d3220e4b9da5f82fbc189a4b83401ee5b13a496b
MD5 ac1587025078cd63e45f7fad10149100
SHA1 e377d25cb1cc15d29a4a27dc4f53c9124085d902
SHA512 85eff64f830223362020b53869fed151e20201130633fe8f54502a2616cdb63a1c835f0a55e92778fa2d9755f11c84f918d3a717644311de1a4f003077442f01
SSDEEP 12288:LZj/zVtLo3uWXQDWT7CfuUNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNL:LV/zVxTWT7CW
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

defeatwax.ru
refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
1976	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\lzqxhgvd\ImagePath = "C:\\Windows\\SysWOW64\\lzqxhgvd\\iupmtssg.exe"	svchost.exe

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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
368	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4132	iupmtssg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4132 set thread context of 368	4132	iupmtssg.exe	101

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
1380	sc.exe
4824	sc.exe
2140	sc.exe

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2524	1620	WerFault.exe	84
464	4132	WerFault.exe	95

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1620 wrote to memory of 5028	1620	ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe	85
PID 1620 wrote to memory of 5028	1620	ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe	85
PID 1620 wrote to memory of 5028	1620	ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe	85
PID 1620 wrote to memory of 972	1620	ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe	87
PID 1620 wrote to memory of 972	1620	ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe	87
PID 1620 wrote to memory of 972	1620	ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe	87
PID 1620 wrote to memory of 1380	1620	ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe	89
PID 1620 wrote to memory of 1380	1620	ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe	89
PID 1620 wrote to memory of 1380	1620	ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe	89
PID 1620 wrote to memory of 4824	1620	ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe	91
PID 1620 wrote to memory of 4824	1620	ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe	91
PID 1620 wrote to memory of 4824	1620	ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe	91
PID 1620 wrote to memory of 2140	1620	ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe	93
PID 1620 wrote to memory of 2140	1620	ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe	93
PID 1620 wrote to memory of 2140	1620	ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe	93
PID 1620 wrote to memory of 1976	1620	ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe	96
PID 1620 wrote to memory of 1976	1620	ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe	96
PID 1620 wrote to memory of 1976	1620	ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe	96
PID 4132 wrote to memory of 368	4132	iupmtssg.exe	101
PID 4132 wrote to memory of 368	4132	iupmtssg.exe	101
PID 4132 wrote to memory of 368	4132	iupmtssg.exe	101
PID 4132 wrote to memory of 368	4132	iupmtssg.exe	101
PID 4132 wrote to memory of 368	4132	iupmtssg.exe	101

C:\Users\Admin\AppData\Local\Temp\ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1620
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lzqxhgvd\
  2⤵
  PID:5028
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\iupmtssg.exe" C:\Windows\SysWOW64\lzqxhgvd\
  2⤵
  PID:972
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lzqxhgvd binPath= "C:\Windows\SysWOW64\lzqxhgvd\iupmtssg.exe /d\"C:\Users\Admin\AppData\Local\Temp\ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:1380
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lzqxhgvd "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4824
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lzqxhgvd
  2⤵
  - Launches sc.exe
  PID:2140
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
  2⤵
  - Modifies Windows Firewall
  PID:1976
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1620 -s 1264
  2⤵
  - Program crash
  PID:2524

C:\Windows\SysWOW64\lzqxhgvd\iupmtssg.exe
C:\Windows\SysWOW64\lzqxhgvd\iupmtssg.exe /d"C:\Users\Admin\AppData\Local\Temp\ac1587025078cd63e45f7fad10149100_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4132
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:368
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4132 -s 508
  2⤵
  - Program crash
  PID:464

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 1620 -ip 1620
1⤵
PID:1372

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4132 -ip 4132
1⤵
PID:4400

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

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

iupmtssg.exe

Path C:\Users\Admin\AppData\Local\Temp\iupmtssg.exe
Size 11.8MB
SHA256 0eb61080403364733e1b63bdfd548740949383cb8c8c64c8fd3f4ba6952885ad
MD5 ba5f2068213818e1f9e0b8e05a07ec0a
SHA1 593c2612c394e131d70a767afb747bb1ca8c84c0
SHA512 15dc7c686a0b4b7fab572d148c391f64f9c1437ca6b20e56ca199b52895ec4644fe3440340cb291e404d843cf6d3510033b6bcc1fa7a846306c2960f2c1fd7e0
SSDEEP 12288:jZj/zVtLo3uWXQDWT7CfuUNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN1:jV/zVxTWT7CW
MD5 SHA1 SHA512 SSDEEP

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memory/368-16-0x0000000000890000-0x00000000008A5000-memory.dmp

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memory/368-11-0x0000000000890000-0x00000000008A5000-memory.dmp

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memory/368-18-0x0000000000890000-0x00000000008A5000-memory.dmp

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memory/368-19-0x0000000000890000-0x00000000008A5000-memory.dmp

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memory/1620-3-0x0000000000400000-0x000000000044D000-memory.dmp

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memory/1620-2-0x0000000000580000-0x0000000000593000-memory.dmp

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memory/1620-8-0x0000000000400000-0x000000000044D000-memory.dmp

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memory/1620-9-0x0000000000580000-0x0000000000593000-memory.dmp

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memory/1620-1-0x0000000000600000-0x0000000000700000-memory.dmp

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memory/4132-10-0x0000000000520000-0x0000000000620000-memory.dmp

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memory/4132-12-0x0000000000400000-0x000000000044D000-memory.dmp

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memory/4132-17-0x0000000000400000-0x000000000044D000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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