tofsee | 6e5691161afc3f8d202dfc94f917d73acdf30d2f4a184da64a05c9abda98b7d5

Analysis

max time kernel
154s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
20/04/2024, 17:35

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe
Size 13.3MB
Sample240420-v55d5aeb8x
SHA256 6e5691161afc3f8d202dfc94f917d73acdf30d2f4a184da64a05c9abda98b7d5
MD5 fd43c0ae0a977257010f08fe87f3bef4
SHA1 899f51924fdd2ef971925bab89cc7e2bcd12d64c
SHA512 87f3bab2d6ec219477121448929fa0dc73519696608d6992263b4a3880a3532a112182b3f52b21d45a3a7b551451dfff3397612452534ece01973a25da852e90
SSDEEP 98304:MNWUlllllllllllllllllllllllllllllllllllllllllllllllllllllllllllL:6W
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
3588	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\lqujmktg\ImagePath = "C:\\Windows\\SysWOW64\\lqujmktg\\acvgnvjz.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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2484	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4428	acvgnvjz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4428 set thread context of 2484	4428	acvgnvjz.exe	113

Launches sc.exe 3 IoCs

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

pid	Process
644	sc.exe
4676	sc.exe
1708	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 1596 wrote to memory of 208	1596	fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe	92
PID 1596 wrote to memory of 208	1596	fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe	92
PID 1596 wrote to memory of 208	1596	fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe	92
PID 1596 wrote to memory of 2424	1596	fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe	96
PID 1596 wrote to memory of 2424	1596	fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe	96
PID 1596 wrote to memory of 2424	1596	fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe	96
PID 1596 wrote to memory of 644	1596	fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe	98
PID 1596 wrote to memory of 644	1596	fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe	98
PID 1596 wrote to memory of 644	1596	fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe	98
PID 1596 wrote to memory of 4676	1596	fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe	101
PID 1596 wrote to memory of 4676	1596	fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe	101
PID 1596 wrote to memory of 4676	1596	fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe	101
PID 1596 wrote to memory of 1708	1596	fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe	104
PID 1596 wrote to memory of 1708	1596	fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe	104
PID 1596 wrote to memory of 1708	1596	fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe	104
PID 1596 wrote to memory of 3588	1596	fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe	107
PID 1596 wrote to memory of 3588	1596	fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe	107
PID 1596 wrote to memory of 3588	1596	fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe	107
PID 4428 wrote to memory of 2484	4428	acvgnvjz.exe	113
PID 4428 wrote to memory of 2484	4428	acvgnvjz.exe	113
PID 4428 wrote to memory of 2484	4428	acvgnvjz.exe	113
PID 4428 wrote to memory of 2484	4428	acvgnvjz.exe	113
PID 4428 wrote to memory of 2484	4428	acvgnvjz.exe	113

C:\Users\Admin\AppData\Local\Temp\fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1596
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lqujmktg\
  2⤵
  PID:208
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\acvgnvjz.exe" C:\Windows\SysWOW64\lqujmktg\
  2⤵
  PID:2424
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lqujmktg binPath= "C:\Windows\SysWOW64\lqujmktg\acvgnvjz.exe /d\"C:\Users\Admin\AppData\Local\Temp\fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:644
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lqujmktg "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4676
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lqujmktg
  2⤵
  - Launches sc.exe
  PID:1708
- 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:3588

C:\Windows\SysWOW64\lqujmktg\acvgnvjz.exe
C:\Windows\SysWOW64\lqujmktg\acvgnvjz.exe /d"C:\Users\Admin\AppData\Local\Temp\fd43c0ae0a977257010f08fe87f3bef4_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4428
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:2484

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 --mojo-platform-channel-handle=1344 --field-trial-handle=2236,i,5367110156796017614,12594004256180761011,262144 --variations-seed-version /prefetch:8
1⤵
PID:2272

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

Replay Monitor

Loading Replay Monitor...

Downloads

acvgnvjz.exe

Path C:\Users\Admin\AppData\Local\Temp\acvgnvjz.exe
Size 14.3MB
SHA256 2a3cecf39835f1d46a812e9c011f775765538f2036494b5f1fc6b766d9b2fd9d
MD5 b0ca3273b9e25c13be9b5811808fb330
SHA1 e51c8096d92fa2db7c18dc4d89a9202884bbaf99
SHA512 ecf8eb5e53d3d7a16009a21305e34aee706b652628a5a91856795094db0e7012f10c4c58aae341edd6765906335448c3e6d6db79c828d687796bc14fad0acb86
SSDEEP 98304:xNWUlllllllllllllllllllllllllllllllllllllllllllllllllllllllllllt:HW
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1596-9-0x0000000005410000-0x0000000005423000-memory.dmp

Download

memory/1596-3-0x0000000000400000-0x00000000036CD000-memory.dmp

Download

memory/1596-5-0x0000000000400000-0x00000000036CD000-memory.dmp

Download

memory/1596-2-0x0000000005410000-0x0000000005423000-memory.dmp

Download

memory/1596-8-0x0000000000400000-0x00000000036CD000-memory.dmp

Download

memory/1596-1-0x0000000003940000-0x0000000003A40000-memory.dmp

Download

memory/2484-12-0x0000000000D60000-0x0000000000D75000-memory.dmp

Download

memory/2484-16-0x0000000000D60000-0x0000000000D75000-memory.dmp

Download

memory/2484-18-0x0000000000D60000-0x0000000000D75000-memory.dmp

Download

memory/2484-19-0x0000000000D60000-0x0000000000D75000-memory.dmp

Download

memory/2484-20-0x0000000000D60000-0x0000000000D75000-memory.dmp

Download

memory/4428-11-0x0000000003830000-0x0000000003930000-memory.dmp

Download

memory/4428-17-0x0000000000400000-0x00000000036CD000-memory.dmp

Download

memory/4428-14-0x0000000000400000-0x00000000036CD000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads