tofsee | 9af45fbda0ef9caf884562525796a9f84f585d029103cee764b1e6781f6e57ef

Analysis

max time kernel
148s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05/04/2024, 03:05

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General

Target
c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe
Size 14.3MB
Sample240405-dlb5ssaf5s
SHA256 9af45fbda0ef9caf884562525796a9f84f585d029103cee764b1e6781f6e57ef
MD5 c90c33f237dc65cc34bac3f797ceb682
SHA1 9919d3358b94aefa5c7c1ea8324f43b127dbda9e
SHA512 7c83d2134f5756fb3de1b6621ebca22f19aad7370986d9ec5cf48ad466188934d5c62cb78884e626d1d4780ab80ca3908cd4d19d7b1db16df34d8d14ff032070
SSDEEP 12288:/Zwvqm0loTlEUKg7/ua4FXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX:/SvqmNB/d
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

defeatwax.ru
refabyd.info

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
1084	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\owggqjrj\ImagePath = "C:\\Windows\\SysWOW64\\owggqjrj\\nuxvwwma.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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2972	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2932	nuxvwwma.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2932 set thread context of 2972	2932	nuxvwwma.exe	116

Launches sc.exe 3 IoCs

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

pid	Process
3992	sc.exe
5104	sc.exe
4916	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
4208	2752	WerFault.exe	92
4088	2932	WerFault.exe	108

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2752 wrote to memory of 540	2752	c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe	96
PID 2752 wrote to memory of 540	2752	c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe	96
PID 2752 wrote to memory of 540	2752	c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe	96
PID 2752 wrote to memory of 4476	2752	c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe	98
PID 2752 wrote to memory of 4476	2752	c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe	98
PID 2752 wrote to memory of 4476	2752	c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe	98
PID 2752 wrote to memory of 3992	2752	c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe	100
PID 2752 wrote to memory of 3992	2752	c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe	100
PID 2752 wrote to memory of 3992	2752	c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe	100
PID 2752 wrote to memory of 5104	2752	c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe	102
PID 2752 wrote to memory of 5104	2752	c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe	102
PID 2752 wrote to memory of 5104	2752	c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe	102
PID 2752 wrote to memory of 4916	2752	c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe	106
PID 2752 wrote to memory of 4916	2752	c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe	106
PID 2752 wrote to memory of 4916	2752	c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe	106
PID 2752 wrote to memory of 1084	2752	c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe	109
PID 2752 wrote to memory of 1084	2752	c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe	109
PID 2752 wrote to memory of 1084	2752	c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe	109
PID 2932 wrote to memory of 2972	2932	nuxvwwma.exe	116
PID 2932 wrote to memory of 2972	2932	nuxvwwma.exe	116
PID 2932 wrote to memory of 2972	2932	nuxvwwma.exe	116
PID 2932 wrote to memory of 2972	2932	nuxvwwma.exe	116
PID 2932 wrote to memory of 2972	2932	nuxvwwma.exe	116

C:\Users\Admin\AppData\Local\Temp\c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2752
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\owggqjrj\
  2⤵
  PID:540
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nuxvwwma.exe" C:\Windows\SysWOW64\owggqjrj\
  2⤵
  PID:4476
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create owggqjrj binPath= "C:\Windows\SysWOW64\owggqjrj\nuxvwwma.exe /d\"C:\Users\Admin\AppData\Local\Temp\c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:3992
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description owggqjrj "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:5104
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start owggqjrj
  2⤵
  - Launches sc.exe
  PID:4916
- 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:1084
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2752 -s 892
  2⤵
  - Program crash
  PID:4208

C:\Windows\SysWOW64\owggqjrj\nuxvwwma.exe
C:\Windows\SysWOW64\owggqjrj\nuxvwwma.exe /d"C:\Users\Admin\AppData\Local\Temp\c90c33f237dc65cc34bac3f797ceb682_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2932
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:2972
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2932 -s 508
  2⤵
  - Program crash
  PID:4088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2752 -ip 2752
1⤵
PID:2132

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2932 -ip 2932
1⤵
PID:4744

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=4052 --field-trial-handle=2264,i,13734085038406049477,12426093271221802693,262144 --variations-seed-version /prefetch:8
1⤵
PID:1624

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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nuxvwwma.exe

Path C:\Users\Admin\AppData\Local\Temp\nuxvwwma.exe
Size 13.5MB
SHA256 7046b4201c463493bd1f4230a6839079ced4ff3036008444c57d41b090141c36
MD5 f52c5abda5a4be396883d21e05f15c37
SHA1 70ca673201b8f71d9ab42a749998bb0f4b7147bc
SHA512 76cabd36abcc9014ca5c1aa1a7dde851a349adf81dbcb83fae092ec21bc895811a6a11d0250aac1e7c6cce1b1c2e5ad0af6e35e5a3738d81f2a8aa6c4ad179ab
SSDEEP 12288:rZwvqm0loTlEUKg7/ua4FXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX:rSvqmNB/d
MD5 SHA1 SHA512 SSDEEP

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memory/2752-1-0x00000000006D0000-0x00000000007D0000-memory.dmp

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memory/2752-2-0x0000000000560000-0x0000000000573000-memory.dmp

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memory/2752-3-0x0000000000400000-0x000000000044D000-memory.dmp

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memory/2752-8-0x0000000000400000-0x000000000044D000-memory.dmp

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memory/2752-9-0x0000000000560000-0x0000000000573000-memory.dmp

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memory/2932-10-0x0000000000650000-0x0000000000750000-memory.dmp

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memory/2932-11-0x0000000000400000-0x000000000044D000-memory.dmp

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memory/2932-18-0x0000000000400000-0x000000000044D000-memory.dmp

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memory/2972-12-0x0000000000AC0000-0x0000000000AD5000-memory.dmp

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memory/2972-16-0x0000000000AC0000-0x0000000000AD5000-memory.dmp

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memory/2972-15-0x0000000000AC0000-0x0000000000AD5000-memory.dmp

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memory/2972-17-0x0000000000AC0000-0x0000000000AD5000-memory.dmp

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memory/2972-19-0x0000000000AC0000-0x0000000000AD5000-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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