tofsee | d5e55dd60163279a4f8eb9e7835b3757652773a4d1ebb344fce4cebc8598bf06

Analysis

max time kernel
144s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
02/06/2024, 22:29

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General

Target
8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe
Size 142KB
Sample240602-2d7thahc8z
SHA256 d5e55dd60163279a4f8eb9e7835b3757652773a4d1ebb344fce4cebc8598bf06
MD5 8fa767bca8dd884d7f22e459bc007494
SHA1 d654e967b2aed350e86eb41db5541fa59abd7519
SHA512 3a9e75ea9fb84513a4865666d502951a776fdc2979eb037f9d49b77e27567dbb03df8cb869a9bfaab6c7d85877372f6a935cb745f0a5685c03d4db6d782a5f14
SSDEEP 3072:a9Tpm/Wn6286tMkFG6ASkHDmdxPvrknn3ost0rpNUN9f:1ejLHkjmbwn3ojNQ
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion execution 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) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4508	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\gcifhamz\ImagePath = "C:\\Windows\\SysWOW64\\gcifhamz\\owpfkhzj.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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
400	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2532	owpfkhzj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2532 set thread context of 400	2532	owpfkhzj.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
3484	sc.exe
2388	sc.exe
4492	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 1384 wrote to memory of 3696	1384	8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe	94
PID 1384 wrote to memory of 3696	1384	8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe	94
PID 1384 wrote to memory of 3696	1384	8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe	94
PID 1384 wrote to memory of 1584	1384	8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe	96
PID 1384 wrote to memory of 1584	1384	8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe	96
PID 1384 wrote to memory of 1584	1384	8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe	96
PID 1384 wrote to memory of 4492	1384	8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe	98
PID 1384 wrote to memory of 4492	1384	8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe	98
PID 1384 wrote to memory of 4492	1384	8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe	98
PID 1384 wrote to memory of 3484	1384	8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe	100
PID 1384 wrote to memory of 3484	1384	8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe	100
PID 1384 wrote to memory of 3484	1384	8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe	100
PID 1384 wrote to memory of 2388	1384	8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe	102
PID 1384 wrote to memory of 2388	1384	8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe	102
PID 1384 wrote to memory of 2388	1384	8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe	102
PID 1384 wrote to memory of 4508	1384	8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe	105
PID 1384 wrote to memory of 4508	1384	8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe	105
PID 1384 wrote to memory of 4508	1384	8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe	105
PID 2532 wrote to memory of 400	2532	owpfkhzj.exe	107
PID 2532 wrote to memory of 400	2532	owpfkhzj.exe	107
PID 2532 wrote to memory of 400	2532	owpfkhzj.exe	107
PID 2532 wrote to memory of 400	2532	owpfkhzj.exe	107
PID 2532 wrote to memory of 400	2532	owpfkhzj.exe	107

C:\Users\Admin\AppData\Local\Temp\8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1384
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gcifhamz\
  2⤵
  PID:3696
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\owpfkhzj.exe" C:\Windows\SysWOW64\gcifhamz\
  2⤵
  PID:1584
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gcifhamz binPath= "C:\Windows\SysWOW64\gcifhamz\owpfkhzj.exe /d\"C:\Users\Admin\AppData\Local\Temp\8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:4492
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gcifhamz "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:3484
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gcifhamz
  2⤵
  - Launches sc.exe
  PID:2388
- 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:4508

C:\Windows\SysWOW64\gcifhamz\owpfkhzj.exe
C:\Windows\SysWOW64\gcifhamz\owpfkhzj.exe /d"C:\Users\Admin\AppData\Local\Temp\8fa767bca8dd884d7f22e459bc007494_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2532
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:400

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4008,i,5711962389779687290,1245653010537220991,262144 --variations-seed-version --mojo-platform-channel-handle=4092 /prefetch:8
1⤵
PID:3092

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

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

owpfkhzj.exe

Path C:\Users\Admin\AppData\Local\Temp\owpfkhzj.exe
Size 11.6MB
SHA256 8a155f2b4f261b38b04a9c580446c1957033960a93125cf79d4db64906c4a708
MD5 630a85c9faf66fa1cef496e690d7a851
SHA1 d22bec4d11f5fe0a88f3fcbaa0c5f22d73c02bfc
SHA512 5cbaff224c4d3d1512e5ca556d4b04518908183d2bfcf984a33525f6a84d61f3233056f4469df74684bb72708975a96a9ba7675aa0d3f4acdc23a46c9b56203b
SSDEEP 3072:D9Tpm/Wn6286tMkFG6ASkHDmdxPvrknn3ost0rpNUN9f:2ejLHkjmbwn3ojNQ
MD5 SHA1 SHA512 SSDEEP

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memory/400-9-0x00000000008B0000-0x00000000008C5000-memory.dmp

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memory/400-12-0x00000000008B0000-0x00000000008C5000-memory.dmp

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memory/400-13-0x00000000008B0000-0x00000000008C5000-memory.dmp

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memory/1384-0-0x00000000004B0000-0x00000000004B1000-memory.dmp

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memory/1384-1-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/1384-2-0x00000000004C0000-0x00000000004C1000-memory.dmp

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memory/1384-6-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/2532-7-0x0000000000400000-0x0000000000426000-memory.dmp

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memory/2532-8-0x0000000000690000-0x0000000000691000-memory.dmp

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memory/2532-10-0x0000000000400000-0x0000000000426000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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