tofsee | ade92047b5c57eca5587d05b35bb98f36a5296fd845201cc4b3d3b284039a82c

General

Target

93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe
Size

142KB
MD5

93a587a1a3f231c7abb57573f000c01b
SHA1

73924fb2fd9587e0fea4c0577e729a647009bd2e
SHA256

ade92047b5c57eca5587d05b35bb98f36a5296fd845201cc4b3d3b284039a82c
SHA512

8bed72bcad6d4c1c20900144f7e329432df514ad4425dc8afd90c7d578b970f4b57ab7c18c8160f03530d9acf81cdc6dddb3439ad057b05563ee2fed9bc661a3
SSDEEP

3072:EO8/FLfgx6rzTkYfiL2+jKfgi4m5nuGFU6W6WNE6b3U:Q9LzwFLnKP46uC

Score

10^/10

tofsee evasion execution 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) 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

Processes:

netsh.exe

pid process

4336 netsh.exe

pid	process
4336	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\wynocjgt\ImagePath = "C:\\Windows\\SysWOW64\\wynocjgt\\utduombn.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:

93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1976 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

utduombn.exe

pid process

860 utduombn.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

utduombn.exe

description pid process target process

PID 860 set thread context of 1976 860 utduombn.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

3924 sc.exe
512 sc.exe
532 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1976	svchost.exe

pid	process
860	utduombn.exe

description	pid	process	target process
PID 860 set thread context of 1976	860	utduombn.exe	svchost.exe

pid	process
3924	sc.exe
512	sc.exe
532	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exeutduombn.exe

description	pid	process	target process
PID 2816 wrote to memory of 3852	2816	93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe	cmd.exe
PID 2816 wrote to memory of 3852	2816	93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe	cmd.exe
PID 2816 wrote to memory of 3852	2816	93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe	cmd.exe
PID 2816 wrote to memory of 988	2816	93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe	cmd.exe
PID 2816 wrote to memory of 988	2816	93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe	cmd.exe
PID 2816 wrote to memory of 988	2816	93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe	cmd.exe
PID 2816 wrote to memory of 512	2816	93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe	sc.exe
PID 2816 wrote to memory of 512	2816	93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe	sc.exe
PID 2816 wrote to memory of 512	2816	93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe	sc.exe
PID 2816 wrote to memory of 532	2816	93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe	sc.exe
PID 2816 wrote to memory of 532	2816	93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe	sc.exe
PID 2816 wrote to memory of 532	2816	93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe	sc.exe
PID 2816 wrote to memory of 3924	2816	93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe	sc.exe
PID 2816 wrote to memory of 3924	2816	93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe	sc.exe
PID 2816 wrote to memory of 3924	2816	93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe	sc.exe
PID 2816 wrote to memory of 4336	2816	93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe	netsh.exe
PID 2816 wrote to memory of 4336	2816	93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe	netsh.exe
PID 2816 wrote to memory of 4336	2816	93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe	netsh.exe
PID 860 wrote to memory of 1976	860	utduombn.exe	svchost.exe
PID 860 wrote to memory of 1976	860	utduombn.exe	svchost.exe
PID 860 wrote to memory of 1976	860	utduombn.exe	svchost.exe
PID 860 wrote to memory of 1976	860	utduombn.exe	svchost.exe
PID 860 wrote to memory of 1976	860	utduombn.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2816

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wynocjgt\
2⤵
PID:3852

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\utduombn.exe" C:\Windows\SysWOW64\wynocjgt\
2⤵
PID:988

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create wynocjgt binPath= "C:\Windows\SysWOW64\wynocjgt\utduombn.exe /d\"C:\Users\Admin\AppData\Local\Temp\93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:512

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description wynocjgt "wifi internet conection"
2⤵
- Launches sc.exe
PID:532

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start wynocjgt
2⤵
- Launches sc.exe
PID:3924

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:4336

C:\Windows\SysWOW64\wynocjgt\utduombn.exe
C:\Windows\SysWOW64\wynocjgt\utduombn.exe /d"C:\Users\Admin\AppData\Local\Temp\93a587a1a3f231c7abb57573f000c01b_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:860

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:1976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

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

C:\Users\Admin\AppData\Local\Temp\utduombn.exe

Filesize
13.2MB

MD5
cfee3154b6202fe13e6ad2e15522b5c6

SHA1
2a21328dcdf6358a4baa4fe1039c8d9e8df68b70

SHA256
fb672da7dc330ec75e00a16ede5a46dc2a11b29d4a7ef2cd7e5691b3626697d5

SHA512
8d67d7f2d6ac3c420041df643cb93ba0b12732cbf08664d49cc0db84bc219c384ffb2abf591cdfaab68ed95fe197ddca4608255f964bea5bbcb4297a18c5db22

Download Submit
memory/860-8-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/860-7-0x0000000000960000-0x0000000000961000-memory.dmp

Filesize
4KB

Download
memory/860-10-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1976-9-0x0000000000C40000-0x0000000000C55000-memory.dmp

Filesize
84KB

Download
memory/1976-12-0x0000000000C40000-0x0000000000C55000-memory.dmp

Filesize
84KB

Download
memory/1976-11-0x0000000000C40000-0x0000000000C55000-memory.dmp

Filesize
84KB

Download
memory/1976-13-0x0000000000C40000-0x0000000000C55000-memory.dmp

Filesize
84KB

Download
memory/2816-0-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2816-2-0x00000000006E0000-0x00000000006E1000-memory.dmp

Filesize
4KB

Download
memory/2816-1-0x0000000000580000-0x0000000000581000-memory.dmp

Filesize
4KB

Download
memory/2816-6-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads