tofsee | 7e960dc939bb25b670835c4733e0d74307ca19b5455fd6d51a75f073d7ab17fd

General

Target

f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe
Size

14.1MB
MD5

f329f7e7424442e2f3b4f34e0bd50041
SHA1

b861682fbd1c1a764cf3bda739c7411e6bb8e716
SHA256

7e960dc939bb25b670835c4733e0d74307ca19b5455fd6d51a75f073d7ab17fd
SHA512

f655bfbc6f32d70959b185202b7d5a37104002d53cff7edd306e7bf5cd36fdd3862e67890838a9ecaea4142cf2de8074e2eee64ff1804bb24a93931f72d2b81c
SSDEEP

24576:cjCj10HSqGgeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeev:c/D

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

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

Processes:

netsh.exe

pid process

4268 netsh.exe

pid	process
4268	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\adcvvdfx\ImagePath = "C:\\Windows\\SysWOW64\\adcvvdfx\\ktjxymbh.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:

f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

ktjxymbh.exe

pid process

4164 ktjxymbh.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ktjxymbh.exe

description pid process target process

PID 4164 set thread context of 464 4164 ktjxymbh.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

4084 sc.exe
312 sc.exe
1932 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4164	ktjxymbh.exe

description	pid	process	target process
PID 4164 set thread context of 464	4164	ktjxymbh.exe	svchost.exe

pid	process
4084	sc.exe
312	sc.exe
1932	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exektjxymbh.exe

description	pid	process	target process
PID 1076 wrote to memory of 2212	1076	f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe	cmd.exe
PID 1076 wrote to memory of 2212	1076	f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe	cmd.exe
PID 1076 wrote to memory of 2212	1076	f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe	cmd.exe
PID 1076 wrote to memory of 4532	1076	f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe	cmd.exe
PID 1076 wrote to memory of 4532	1076	f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe	cmd.exe
PID 1076 wrote to memory of 4532	1076	f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe	cmd.exe
PID 1076 wrote to memory of 4084	1076	f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe	sc.exe
PID 1076 wrote to memory of 4084	1076	f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe	sc.exe
PID 1076 wrote to memory of 4084	1076	f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe	sc.exe
PID 1076 wrote to memory of 312	1076	f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe	sc.exe
PID 1076 wrote to memory of 312	1076	f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe	sc.exe
PID 1076 wrote to memory of 312	1076	f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe	sc.exe
PID 1076 wrote to memory of 1932	1076	f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe	sc.exe
PID 1076 wrote to memory of 1932	1076	f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe	sc.exe
PID 1076 wrote to memory of 1932	1076	f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe	sc.exe
PID 1076 wrote to memory of 4268	1076	f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe	netsh.exe
PID 1076 wrote to memory of 4268	1076	f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe	netsh.exe
PID 1076 wrote to memory of 4268	1076	f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe	netsh.exe
PID 4164 wrote to memory of 464	4164	ktjxymbh.exe	svchost.exe
PID 4164 wrote to memory of 464	4164	ktjxymbh.exe	svchost.exe
PID 4164 wrote to memory of 464	4164	ktjxymbh.exe	svchost.exe
PID 4164 wrote to memory of 464	4164	ktjxymbh.exe	svchost.exe
PID 4164 wrote to memory of 464	4164	ktjxymbh.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1076

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\adcvvdfx\
2⤵
PID:2212

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ktjxymbh.exe" C:\Windows\SysWOW64\adcvvdfx\
2⤵
PID:4532

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create adcvvdfx binPath= "C:\Windows\SysWOW64\adcvvdfx\ktjxymbh.exe /d\"C:\Users\Admin\AppData\Local\Temp\f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:4084

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description adcvvdfx "wifi internet conection"
2⤵
- Launches sc.exe
PID:312

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start adcvvdfx
2⤵
- Launches sc.exe
PID:1932

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:4268

C:\Windows\SysWOW64\adcvvdfx\ktjxymbh.exe
C:\Windows\SysWOW64\adcvvdfx\ktjxymbh.exe /d"C:\Users\Admin\AppData\Local\Temp\f329f7e7424442e2f3b4f34e0bd50041_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4164

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
PID:464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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\ktjxymbh.exe
Filesize
11.8MB

MD5
dda29696697627935b491cb9213606eb

SHA1
5f26c5db377e4a7e79e1762a738997065b550bcf

SHA256
b35bd25bae4e658aac7ac882e307227966f3075fcfb36f50dcc10be8b0d65dca

SHA512
99ea1d97c3d474ea39cdc1d44199c5b96a1902fc5120b6b8fc6085987ab5c688f8c40b94dc0620608a8550b5379cb2536e0cb6bad29d3b534911e831ef3e32e8

Download Submit
memory/464-11-0x00000000004F0000-0x0000000000505000-memory.dmp

Filesize
84KB

Download
memory/464-26-0x00000000004F0000-0x0000000000505000-memory.dmp

Filesize
84KB

Download
memory/464-17-0x00000000004F0000-0x0000000000505000-memory.dmp

Filesize
84KB

Download
memory/464-16-0x00000000004F0000-0x0000000000505000-memory.dmp

Filesize
84KB

Download
memory/464-14-0x00000000004F0000-0x0000000000505000-memory.dmp

Filesize
84KB

Download
memory/1076-15-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1076-1-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download
memory/1076-4-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1076-23-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download
memory/1076-2-0x0000000000600000-0x0000000000613000-memory.dmp

Filesize
76KB

Download
memory/4164-10-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4164-9-0x00000000004E0000-0x00000000004F3000-memory.dmp

Filesize
76KB

Download
memory/4164-8-0x0000000000520000-0x0000000000620000-memory.dmp

Filesize
1024KB

Download
memory/4164-18-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads