tofsee | 3546db46d605f744a285fe60fcbacc6b686aa6fae4c32890b030924471e0e59f

Analysis

max time kernel
145s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
09/05/2024, 17:30

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General

Target
2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe
Size 99KB
Sample240509-v264jsgh65
SHA256 3546db46d605f744a285fe60fcbacc6b686aa6fae4c32890b030924471e0e59f
MD5 2b126fbd0352c9ec2f7833af3d0df7ca
SHA1 3bf9cee470ad6cf126635570d89d9d9f30cef386
SHA512 0dfb908197503bf9c1c9deeb015504d1b51d4c00857b34c3862f6c7fd9a4423acb0a068f1b63e2d6757b4c89f2d993e7913767c24d32763afd5e3c1ec43bdcc7
SSDEEP 1536:6Ti28Kx4Cm792SAYqEVvsQS5QqmHN4SMwOVth8+T96R9UB4xw7585yWvNtQ:6TJaCmgSAEsNdm26OV0uofUBCw7O5N/
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
3008	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\adpxrakv\ImagePath = "C:\\Windows\\SysWOW64\\adpxrakv\\xzulcwdw.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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4364	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1416	xzulcwdw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1416 set thread context of 4364	1416	xzulcwdw.exe	99

Launches sc.exe 3 IoCs

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

pid	Process
4128	sc.exe
3324	sc.exe
388	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 64 wrote to memory of 1248	64	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	82
PID 64 wrote to memory of 1248	64	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	82
PID 64 wrote to memory of 1248	64	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	82
PID 64 wrote to memory of 212	64	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	88
PID 64 wrote to memory of 212	64	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	88
PID 64 wrote to memory of 212	64	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	88
PID 64 wrote to memory of 388	64	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	90
PID 64 wrote to memory of 388	64	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	90
PID 64 wrote to memory of 388	64	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	90
PID 64 wrote to memory of 4128	64	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	92
PID 64 wrote to memory of 4128	64	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	92
PID 64 wrote to memory of 4128	64	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	92
PID 64 wrote to memory of 3324	64	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	94
PID 64 wrote to memory of 3324	64	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	94
PID 64 wrote to memory of 3324	64	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	94
PID 1416 wrote to memory of 4364	1416	xzulcwdw.exe	99
PID 1416 wrote to memory of 4364	1416	xzulcwdw.exe	99
PID 1416 wrote to memory of 4364	1416	xzulcwdw.exe	99
PID 1416 wrote to memory of 4364	1416	xzulcwdw.exe	99
PID 1416 wrote to memory of 4364	1416	xzulcwdw.exe	99
PID 64 wrote to memory of 3008	64	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	100
PID 64 wrote to memory of 3008	64	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	100
PID 64 wrote to memory of 3008	64	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	100

C:\Users\Admin\AppData\Local\Temp\2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:64
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\adpxrakv\
  2⤵
  PID:1248
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xzulcwdw.exe" C:\Windows\SysWOW64\adpxrakv\
  2⤵
  PID:212
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create adpxrakv binPath= "C:\Windows\SysWOW64\adpxrakv\xzulcwdw.exe /d\"C:\Users\Admin\AppData\Local\Temp\2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:388
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description adpxrakv "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4128
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start adpxrakv
  2⤵
  - Launches sc.exe
  PID:3324
- 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:3008

C:\Windows\SysWOW64\adpxrakv\xzulcwdw.exe
C:\Windows\SysWOW64\adpxrakv\xzulcwdw.exe /d"C:\Users\Admin\AppData\Local\Temp\2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1416
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:4364

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

xzulcwdw.exe

Path C:\Users\Admin\AppData\Local\Temp\xzulcwdw.exe
Size 11.9MB
SHA256 82f0b4b66761a5c6d59556f2e7d3ba63f047c667574920da10866008b77bfcf7
MD5 9d658d67d80404160208b5f66ba93551
SHA1 b62f9fc79c7637b749fd1546ceb95e7e0f65f3de
SHA512 150578aae265e394562f4518aaf8f24ef37d10a58c52efc5d9288823d7235e6bf11248e3144e4e7282b3272f05cc870ec00665fd09e96400c164c4d54afd8ef6
SSDEEP 24576:yTJaCmGi5T25T25T25T25T25T25T25T25T25T25T25T25T25T25T25T25T25T25T:yTJaCm
MD5 SHA1 SHA512 SSDEEP

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memory/64-13-0x0000000000400000-0x000000000041B000-memory.dmp

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memory/64-2-0x0000000000780000-0x0000000000781000-memory.dmp

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memory/64-1-0x0000000002180000-0x0000000002181000-memory.dmp

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memory/64-0-0x0000000000400000-0x000000000041B000-memory.dmp

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memory/1416-7-0x00000000009B0000-0x00000000009B1000-memory.dmp

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memory/1416-6-0x0000000000400000-0x000000000041B000-memory.dmp

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memory/1416-10-0x0000000000400000-0x000000000041B000-memory.dmp

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memory/4364-8-0x0000000001040000-0x0000000001055000-memory.dmp

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memory/4364-12-0x0000000001040000-0x0000000001055000-memory.dmp

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memory/4364-14-0x0000000001040000-0x0000000001055000-memory.dmp

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memory/4364-15-0x0000000001040000-0x0000000001055000-memory.dmp

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memory/4364-16-0x0000000001040000-0x0000000001055000-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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