tofsee | 93474a8dc670337caf536fd0eac0d70d5d6856fc46db7493f8a982017c9e68c3

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
20/04/2024, 16:27

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General

Target
fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe
Size 14.2MB
Sample240420-tybmssda7x
SHA256 93474a8dc670337caf536fd0eac0d70d5d6856fc46db7493f8a982017c9e68c3
MD5 fd25a9c84be208b088379553ff30606c
SHA1 6de24b33594778df7f9c3fb4dc695e0434b4c474
SHA512 360d771d0ff2991dabd265fef1e52d02a7faae42e8cbae3ddf06ade70e5bab01adf9a7d6bf26062bc054fde2c7bad224fa9fa15cd5282b1f68938ce0ece3c566
SSDEEP 98304:lNWUlllllllllllllllllllllllllllllllllllllllllllllllllllllllllllL:jW
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

43.231.4.7
lazystax.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
884	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\pozlnopl\ImagePath = "C:\\Windows\\SysWOW64\\pozlnopl\\bgqlfroq.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-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
5004	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2120	bgqlfroq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2120 set thread context of 5004	2120	bgqlfroq.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
3832	sc.exe
2492	sc.exe
3580	sc.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4140 wrote to memory of 2224	4140	fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe	90
PID 4140 wrote to memory of 2224	4140	fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe	90
PID 4140 wrote to memory of 2224	4140	fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe	90
PID 4140 wrote to memory of 2612	4140	fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe	92
PID 4140 wrote to memory of 2612	4140	fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe	92
PID 4140 wrote to memory of 2612	4140	fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe	92
PID 4140 wrote to memory of 3832	4140	fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe	94
PID 4140 wrote to memory of 3832	4140	fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe	94
PID 4140 wrote to memory of 3832	4140	fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe	94
PID 4140 wrote to memory of 2492	4140	fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe	96
PID 4140 wrote to memory of 2492	4140	fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe	96
PID 4140 wrote to memory of 2492	4140	fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe	96
PID 4140 wrote to memory of 3580	4140	fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe	98
PID 4140 wrote to memory of 3580	4140	fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe	98
PID 4140 wrote to memory of 3580	4140	fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe	98
PID 4140 wrote to memory of 884	4140	fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe	101
PID 4140 wrote to memory of 884	4140	fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe	101
PID 4140 wrote to memory of 884	4140	fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe	101
PID 2120 wrote to memory of 5004	2120	bgqlfroq.exe	103
PID 2120 wrote to memory of 5004	2120	bgqlfroq.exe	103
PID 2120 wrote to memory of 5004	2120	bgqlfroq.exe	103
PID 2120 wrote to memory of 5004	2120	bgqlfroq.exe	103
PID 2120 wrote to memory of 5004	2120	bgqlfroq.exe	103

C:\Users\Admin\AppData\Local\Temp\fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4140
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pozlnopl\
  2⤵
  PID:2224
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bgqlfroq.exe" C:\Windows\SysWOW64\pozlnopl\
  2⤵
  PID:2612
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pozlnopl binPath= "C:\Windows\SysWOW64\pozlnopl\bgqlfroq.exe /d\"C:\Users\Admin\AppData\Local\Temp\fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:3832
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pozlnopl "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2492
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pozlnopl
  2⤵
  - Launches sc.exe
  PID:3580
- 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:884

C:\Windows\SysWOW64\pozlnopl\bgqlfroq.exe
C:\Windows\SysWOW64\pozlnopl\bgqlfroq.exe /d"C:\Users\Admin\AppData\Local\Temp\fd25a9c84be208b088379553ff30606c_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2120
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:5004

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

bgqlfroq.exe

Path C:\Users\Admin\AppData\Local\Temp\bgqlfroq.exe
Size 13.4MB
SHA256 ef33a60e6f486b3637d3dc5955669e35dea3d001d2e44f2d0119fb398490a020
MD5 430442d77ada11c5d2a8cdcf311593c2
SHA1 fa4fb69b1d802ac7314eacb502ce28e431bb9569
SHA512 c15750bbc5996e498e872bb953304f7e234213c3500a1332820630ca7bf4683a84492c2cb513622727716ace403f55cae946cdc57aa7f062912c47130bab8e0c
SSDEEP 98304:ONWUlllllllllllllllllllllllllllllllllllllllllllllllllllllllllllZ:cW
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2120-10-0x0000000003810000-0x0000000003910000-memory.dmp

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memory/2120-17-0x0000000000400000-0x00000000036CD000-memory.dmp

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memory/2120-19-0x0000000000400000-0x00000000036CD000-memory.dmp

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memory/2120-14-0x0000000000400000-0x00000000036CD000-memory.dmp

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memory/4140-8-0x0000000003970000-0x0000000003983000-memory.dmp

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memory/4140-1-0x00000000039E0000-0x0000000003AE0000-memory.dmp

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memory/4140-4-0x0000000000400000-0x00000000036CD000-memory.dmp

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memory/4140-7-0x0000000000400000-0x00000000036CD000-memory.dmp

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memory/4140-2-0x0000000003970000-0x0000000003983000-memory.dmp

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memory/5004-11-0x0000000001290000-0x00000000012A5000-memory.dmp

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memory/5004-15-0x0000000001290000-0x00000000012A5000-memory.dmp

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memory/5004-16-0x0000000001290000-0x00000000012A5000-memory.dmp

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memory/5004-18-0x0000000001290000-0x00000000012A5000-memory.dmp

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memory/5004-20-0x0000000001290000-0x00000000012A5000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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