tofsee | 70e10e0e9a41b2a5eabc89163aaa2c749dac597f380e01f92e6e08090008a57e

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
31/03/2024, 16:52

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General

Target
58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe
Size 13.5MB
Sample240331-vdcj2afc31
SHA256 70e10e0e9a41b2a5eabc89163aaa2c749dac597f380e01f92e6e08090008a57e
MD5 58c96cac97ebd822ad7be1274d5bccb1
SHA1 fd4a759cbe64f47aac53e2986eb30ccee044f42d
SHA512 8a29add3ec11d772bb7f26f6615a3c14cd040ca008105315aa9a9c34f2dc04e89b53b6ed9d58987205f082d5db1d7fefd977c5bb97d9f07dcdc6c07a3abd294f
SSDEEP 49152:3kHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH:
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

quadoil.ru
lakeflex.ru

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
512	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\wgmujzhr\ImagePath = "C:\\Windows\\SysWOW64\\wgmujzhr\\lrmpyhhc.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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2580	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3244	lrmpyhhc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3244 set thread context of 2580	3244	lrmpyhhc.exe	108

Launches sc.exe 3 IoCs

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

pid	Process
5084	sc.exe
2932	sc.exe
540	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
1232	2692	WerFault.exe	84
3796	3244	WerFault.exe	102

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2692 wrote to memory of 548	2692	58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe	88
PID 2692 wrote to memory of 548	2692	58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe	88
PID 2692 wrote to memory of 548	2692	58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe	88
PID 2692 wrote to memory of 4236	2692	58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe	90
PID 2692 wrote to memory of 4236	2692	58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe	90
PID 2692 wrote to memory of 4236	2692	58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe	90
PID 2692 wrote to memory of 2932	2692	58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe	94
PID 2692 wrote to memory of 2932	2692	58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe	94
PID 2692 wrote to memory of 2932	2692	58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe	94
PID 2692 wrote to memory of 540	2692	58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe	96
PID 2692 wrote to memory of 540	2692	58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe	96
PID 2692 wrote to memory of 540	2692	58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe	96
PID 2692 wrote to memory of 5084	2692	58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe	100
PID 2692 wrote to memory of 5084	2692	58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe	100
PID 2692 wrote to memory of 5084	2692	58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe	100
PID 2692 wrote to memory of 512	2692	58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe	103
PID 2692 wrote to memory of 512	2692	58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe	103
PID 2692 wrote to memory of 512	2692	58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe	103
PID 3244 wrote to memory of 2580	3244	lrmpyhhc.exe	108
PID 3244 wrote to memory of 2580	3244	lrmpyhhc.exe	108
PID 3244 wrote to memory of 2580	3244	lrmpyhhc.exe	108
PID 3244 wrote to memory of 2580	3244	lrmpyhhc.exe	108
PID 3244 wrote to memory of 2580	3244	lrmpyhhc.exe	108

C:\Users\Admin\AppData\Local\Temp\58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2692
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wgmujzhr\
  2⤵
  PID:548
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lrmpyhhc.exe" C:\Windows\SysWOW64\wgmujzhr\
  2⤵
  PID:4236
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wgmujzhr binPath= "C:\Windows\SysWOW64\wgmujzhr\lrmpyhhc.exe /d\"C:\Users\Admin\AppData\Local\Temp\58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2932
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wgmujzhr "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:540
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wgmujzhr
  2⤵
  - Launches sc.exe
  PID:5084
- 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:512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2692 -s 1032
  2⤵
  - Program crash
  PID:1232

C:\Windows\SysWOW64\wgmujzhr\lrmpyhhc.exe
C:\Windows\SysWOW64\wgmujzhr\lrmpyhhc.exe /d"C:\Users\Admin\AppData\Local\Temp\58c96cac97ebd822ad7be1274d5bccb1_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3244
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:2580
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3244 -s 536
  2⤵
  - Program crash
  PID:3796

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2692 -ip 2692
1⤵
PID:4244

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3244 -ip 3244
1⤵
PID:1748

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

lrmpyhhc.exe

Path C:\Users\Admin\AppData\Local\Temp\lrmpyhhc.exe
Size 12.3MB
SHA256 2e06f73997b78eb7c14f9ed03900fdebf17db235352f93e2f38470853bdb164d
MD5 8697675667444e2abbccd418fd238cb7
SHA1 b2f864fc22afd0bbbd4feea5695ed656e993d3a1
SHA512 d135de44986152e015e28b18b7b1bab019b686fbb89fcb224cd852972b532fe684c81695bdc4d407225e789298419dc5a19ccc031cf83efab1387b49fff75bf0
SSDEEP 49152:HkHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHn:
MD5 SHA1 SHA512 SSDEEP

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memory/2580-15-0x0000000000290000-0x00000000002A5000-memory.dmp

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memory/2580-12-0x0000000000290000-0x00000000002A5000-memory.dmp

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memory/2580-16-0x0000000000290000-0x00000000002A5000-memory.dmp

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memory/2580-18-0x0000000000290000-0x00000000002A5000-memory.dmp

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memory/2580-19-0x0000000000290000-0x00000000002A5000-memory.dmp

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memory/2692-4-0x0000000000400000-0x0000000000785000-memory.dmp

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memory/2692-2-0x0000000000920000-0x0000000000933000-memory.dmp

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memory/2692-8-0x0000000000400000-0x0000000000785000-memory.dmp

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memory/2692-9-0x0000000000920000-0x0000000000933000-memory.dmp

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memory/2692-1-0x0000000000AE0000-0x0000000000BE0000-memory.dmp

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memory/3244-10-0x0000000000850000-0x0000000000950000-memory.dmp

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memory/3244-11-0x0000000000400000-0x0000000000785000-memory.dmp

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memory/3244-17-0x0000000000400000-0x0000000000785000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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