tofsee | 560fc803cd88d0362d75b40fc0b3513330ff754c4d3115a7675aefb4b08fa36f

General

Target

f313185687c6097504477b7f37195cdf_JaffaCakes118.exe
Size

11.5MB
MD5

f313185687c6097504477b7f37195cdf
SHA1

fe641fc06084e7289b9981cd907fce4368b91e23
SHA256

560fc803cd88d0362d75b40fc0b3513330ff754c4d3115a7675aefb4b08fa36f
SHA512

8885b3fa9f3026717953797178a2c2bf4cb4c22bebf9d343e2f13a132c8e2cd90595fa66a28cfc5f1236e097046150db84b80142a437ed61faa7cda61e538ea0
SSDEEP

49152:ljrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr:V

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

Processes:

netsh.exe

pid process

1428 netsh.exe

pid	process
1428	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\gaykosmw\ImagePath = "C:\\Windows\\SysWOW64\\gaykosmw\\zlmgbxyv.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

Processes:

f313185687c6097504477b7f37195cdf_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	f313185687c6097504477b7f37195cdf_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1956 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

zlmgbxyv.exe

pid process

2556 zlmgbxyv.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

zlmgbxyv.exe

description pid process target process

PID 2556 set thread context of 1956 2556 zlmgbxyv.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2032 sc.exe
1464 sc.exe
1828 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1956	svchost.exe

pid	process
2556	zlmgbxyv.exe

description	pid	process	target process
PID 2556 set thread context of 1956	2556	zlmgbxyv.exe	svchost.exe

pid	process
2032	sc.exe
1464	sc.exe
1828	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f313185687c6097504477b7f37195cdf_JaffaCakes118.exezlmgbxyv.exe

description	pid	process	target process
PID 2804 wrote to memory of 2164	2804	f313185687c6097504477b7f37195cdf_JaffaCakes118.exe	cmd.exe
PID 2804 wrote to memory of 2164	2804	f313185687c6097504477b7f37195cdf_JaffaCakes118.exe	cmd.exe
PID 2804 wrote to memory of 2164	2804	f313185687c6097504477b7f37195cdf_JaffaCakes118.exe	cmd.exe
PID 2804 wrote to memory of 3784	2804	f313185687c6097504477b7f37195cdf_JaffaCakes118.exe	cmd.exe
PID 2804 wrote to memory of 3784	2804	f313185687c6097504477b7f37195cdf_JaffaCakes118.exe	cmd.exe
PID 2804 wrote to memory of 3784	2804	f313185687c6097504477b7f37195cdf_JaffaCakes118.exe	cmd.exe
PID 2804 wrote to memory of 1828	2804	f313185687c6097504477b7f37195cdf_JaffaCakes118.exe	sc.exe
PID 2804 wrote to memory of 1828	2804	f313185687c6097504477b7f37195cdf_JaffaCakes118.exe	sc.exe
PID 2804 wrote to memory of 1828	2804	f313185687c6097504477b7f37195cdf_JaffaCakes118.exe	sc.exe
PID 2804 wrote to memory of 2032	2804	f313185687c6097504477b7f37195cdf_JaffaCakes118.exe	sc.exe
PID 2804 wrote to memory of 2032	2804	f313185687c6097504477b7f37195cdf_JaffaCakes118.exe	sc.exe
PID 2804 wrote to memory of 2032	2804	f313185687c6097504477b7f37195cdf_JaffaCakes118.exe	sc.exe
PID 2804 wrote to memory of 1464	2804	f313185687c6097504477b7f37195cdf_JaffaCakes118.exe	sc.exe
PID 2804 wrote to memory of 1464	2804	f313185687c6097504477b7f37195cdf_JaffaCakes118.exe	sc.exe
PID 2804 wrote to memory of 1464	2804	f313185687c6097504477b7f37195cdf_JaffaCakes118.exe	sc.exe
PID 2556 wrote to memory of 1956	2556	zlmgbxyv.exe	svchost.exe
PID 2556 wrote to memory of 1956	2556	zlmgbxyv.exe	svchost.exe
PID 2556 wrote to memory of 1956	2556	zlmgbxyv.exe	svchost.exe
PID 2556 wrote to memory of 1956	2556	zlmgbxyv.exe	svchost.exe
PID 2556 wrote to memory of 1956	2556	zlmgbxyv.exe	svchost.exe
PID 2804 wrote to memory of 1428	2804	f313185687c6097504477b7f37195cdf_JaffaCakes118.exe	netsh.exe
PID 2804 wrote to memory of 1428	2804	f313185687c6097504477b7f37195cdf_JaffaCakes118.exe	netsh.exe
PID 2804 wrote to memory of 1428	2804	f313185687c6097504477b7f37195cdf_JaffaCakes118.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\f313185687c6097504477b7f37195cdf_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f313185687c6097504477b7f37195cdf_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2804

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gaykosmw\
2⤵
PID:2164

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zlmgbxyv.exe" C:\Windows\SysWOW64\gaykosmw\
2⤵
PID:3784

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create gaykosmw binPath= "C:\Windows\SysWOW64\gaykosmw\zlmgbxyv.exe /d\"C:\Users\Admin\AppData\Local\Temp\f313185687c6097504477b7f37195cdf_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1828

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description gaykosmw "wifi internet conection"
2⤵
- Launches sc.exe
PID:2032

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start gaykosmw
2⤵
- Launches sc.exe
PID:1464

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:1428

C:\Windows\SysWOW64\gaykosmw\zlmgbxyv.exe
C:\Windows\SysWOW64\gaykosmw\zlmgbxyv.exe /d"C:\Users\Admin\AppData\Local\Temp\f313185687c6097504477b7f37195cdf_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2556

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:1956

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\zlmgbxyv.exe
Filesize
14.8MB

MD5
049211cb5290a21689c5b5c873826c21

SHA1
50da439f2dcd8a826bbbe453540a99df2397642a

SHA256
99d9d8bef4ab1b63c0e5793059c5780a5575b54c3deb13f05823b039fa233568

SHA512
0711b0021cfa652bfde05f8f654747dd2240338aabc78a82dc8216912ebdd840f67a27fb43e6889b7d25a389dcb67234edc4ed5ac720a650b04df760ff7aab74

Download Submit
memory/1956-13-0x0000000000760000-0x0000000000775000-memory.dmp

Filesize
84KB

Download
memory/1956-17-0x0000000000760000-0x0000000000775000-memory.dmp

Filesize
84KB

Download
memory/1956-16-0x0000000000760000-0x0000000000775000-memory.dmp

Filesize
84KB

Download
memory/1956-15-0x0000000000760000-0x0000000000775000-memory.dmp

Filesize
84KB

Download
memory/1956-9-0x0000000000760000-0x0000000000775000-memory.dmp

Filesize
84KB

Download
memory/2556-7-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2556-11-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2804-3-0x0000000002170000-0x0000000002171000-memory.dmp

Filesize
4KB

Download
memory/2804-14-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2804-0-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2804-2-0x0000000002160000-0x0000000002161000-memory.dmp

Filesize
4KB

Download
memory/2804-1-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads