tofsee | f0d18843cd2adf8eb01fb11839339c7f8ef134ace9f9d5a4f1bf4b6229808a07

General

Target
f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe
Size 14.5MB
Sample240415-22l7psaf78
SHA256 f0d18843cd2adf8eb01fb11839339c7f8ef134ace9f9d5a4f1bf4b6229808a07
MD5 f22195b83a3c4e02677a69e80c8b66fe
SHA1 22bb4f0bb5e5a74919c826951f6452379b5ab270
SHA512 93e9675c2f83bac2d27bb7df7c02e95208cddf763b020ee4c7655a79eff1b77b2afd7c6d695df66b429c429f03d1154bc6fdf0d0775b8c9144b4d271f8027c41
SSDEEP 6144:X5VCb4QuzF5pIozzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz:J8NKF5p
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

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
4612	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\lzrygyyi\ImagePath = "C:\\Windows\\SysWOW64\\lzrygyyi\\edplqakx.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-1-5-21-1230272463-3683322193-511842230-1000\Control Panel\International\Geo\Nation	f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2796	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4744	edplqakx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4744 set thread context of 2796	4744	edplqakx.exe	109

Launches sc.exe 3 IoCs

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

pid	Process
3480	sc.exe
4024	sc.exe
3052	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 3304 wrote to memory of 1644	3304	f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe	94
PID 3304 wrote to memory of 1644	3304	f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe	94
PID 3304 wrote to memory of 1644	3304	f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe	94
PID 3304 wrote to memory of 4732	3304	f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe	96
PID 3304 wrote to memory of 4732	3304	f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe	96
PID 3304 wrote to memory of 4732	3304	f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe	96
PID 3304 wrote to memory of 4024	3304	f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe	98
PID 3304 wrote to memory of 4024	3304	f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe	98
PID 3304 wrote to memory of 4024	3304	f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe	98
PID 3304 wrote to memory of 3052	3304	f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe	101
PID 3304 wrote to memory of 3052	3304	f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe	101
PID 3304 wrote to memory of 3052	3304	f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe	101
PID 3304 wrote to memory of 3480	3304	f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe	103
PID 3304 wrote to memory of 3480	3304	f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe	103
PID 3304 wrote to memory of 3480	3304	f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe	103
PID 3304 wrote to memory of 4612	3304	f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe	106
PID 3304 wrote to memory of 4612	3304	f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe	106
PID 3304 wrote to memory of 4612	3304	f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe	106
PID 4744 wrote to memory of 2796	4744	edplqakx.exe	109
PID 4744 wrote to memory of 2796	4744	edplqakx.exe	109
PID 4744 wrote to memory of 2796	4744	edplqakx.exe	109
PID 4744 wrote to memory of 2796	4744	edplqakx.exe	109
PID 4744 wrote to memory of 2796	4744	edplqakx.exe	109

C:\Users\Admin\AppData\Local\Temp\f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3304
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lzrygyyi\
  2⤵
  PID:1644
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\edplqakx.exe" C:\Windows\SysWOW64\lzrygyyi\
  2⤵
  PID:4732
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lzrygyyi binPath= "C:\Windows\SysWOW64\lzrygyyi\edplqakx.exe /d\"C:\Users\Admin\AppData\Local\Temp\f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:4024
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lzrygyyi "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:3052
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lzrygyyi
  2⤵
  - Launches sc.exe
  PID:3480
- 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:4612

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=4192,i,4770062162764366287,7825742579436984831,262144 --variations-seed-version --mojo-platform-channel-handle=4112 /prefetch:8
1⤵
PID:4872

C:\Windows\SysWOW64\lzrygyyi\edplqakx.exe
C:\Windows\SysWOW64\lzrygyyi\edplqakx.exe /d"C:\Users\Admin\AppData\Local\Temp\f22195b83a3c4e02677a69e80c8b66fe_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4744
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:2796

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

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

edplqakx.exe

Path C:\Users\Admin\AppData\Local\Temp\edplqakx.exe
Size 11.7MB
SHA256 d9e5559add026273d1915cf583145a3fa8cea6abafdcb3d1e4efc9a78cba1f5a
MD5 87ccdcc44a9f68a9b4592292839f95cc
SHA1 d686491c58972d9704bf04fbc7ed03dc7833df38
SHA512 0e608b0c7c979e58f70074baf3fb760e671c6cf0741a46db7c737f181da2e0d52abd21f9b0364cc661c6d4bcb366c67ccc2ed8ee8b5cbd6ad453c824329db64e
SSDEEP 6144:B5VCb4QuzF5pIozzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzf:X8NKF5p
MD5 SHA1 SHA512 SSDEEP

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memory/2796-3-0x0000000000340000-0x0000000000355000-memory.dmp

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memory/2796-5-0x0000000000340000-0x0000000000355000-memory.dmp

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memory/2796-7-0x0000000000340000-0x0000000000355000-memory.dmp

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memory/2796-6-0x0000000000340000-0x0000000000355000-memory.dmp

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memory/2796-8-0x0000000000340000-0x0000000000355000-memory.dmp

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memory/2796-9-0x0000000000340000-0x0000000000355000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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