tofsee | d654d69144fc6ec2500c227daf77a0ed09424082093ad47571e4cf83739068dd

General

Target

f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe
Size

11.4MB
MD5

f2210787bb2598f8739155f21507eb79
SHA1

a3113938de29f92261e0591cbf8a570c284ec863
SHA256

d654d69144fc6ec2500c227daf77a0ed09424082093ad47571e4cf83739068dd
SHA512

94302dadf31c5011ed5f728d88343f0ac5695a6cb257e4673ce982b516b292b81e0466f2aae207cb7f155594a0c7a0887ee7de00d4bdcf1a004c230b3be4470f
SSDEEP

12288:hIIW7A7qL8SHSIiwN/iZBqAsArTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT7:OA7qLNNf

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

4792 netsh.exe

pid	process
4792	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\rnmncbk\ImagePath = "C:\\Windows\\SysWOW64\\rnmncbk\\hcrbgldb.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:

f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-776854024-226333264-2052258302-1000\Control Panel\International\Geo\Nation	f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4100 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

hcrbgldb.exe

pid process

1048 hcrbgldb.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

hcrbgldb.exe

description pid process target process

PID 1048 set thread context of 4100 1048 hcrbgldb.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

4288 sc.exe
2572 sc.exe
4984 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

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

3008 2448 WerFault.exe f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe
1716 1048 WerFault.exe hcrbgldb.exe

pid	process
4100	svchost.exe

pid	process
1048	hcrbgldb.exe

description	pid	process	target process
PID 1048 set thread context of 4100	1048	hcrbgldb.exe	svchost.exe

pid	process
4288	sc.exe
2572	sc.exe
4984	sc.exe

pid	pid_target	process	target process
3008	2448	WerFault.exe	f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe
1716	1048	WerFault.exe	hcrbgldb.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f2210787bb2598f8739155f21507eb79_JaffaCakes118.exehcrbgldb.exe

description	pid	process	target process
PID 2448 wrote to memory of 4912	2448	f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe	cmd.exe
PID 2448 wrote to memory of 4912	2448	f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe	cmd.exe
PID 2448 wrote to memory of 4912	2448	f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe	cmd.exe
PID 2448 wrote to memory of 3668	2448	f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe	cmd.exe
PID 2448 wrote to memory of 3668	2448	f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe	cmd.exe
PID 2448 wrote to memory of 3668	2448	f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe	cmd.exe
PID 2448 wrote to memory of 4984	2448	f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe	sc.exe
PID 2448 wrote to memory of 4984	2448	f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe	sc.exe
PID 2448 wrote to memory of 4984	2448	f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe	sc.exe
PID 2448 wrote to memory of 4288	2448	f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe	sc.exe
PID 2448 wrote to memory of 4288	2448	f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe	sc.exe
PID 2448 wrote to memory of 4288	2448	f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe	sc.exe
PID 2448 wrote to memory of 2572	2448	f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe	sc.exe
PID 2448 wrote to memory of 2572	2448	f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe	sc.exe
PID 2448 wrote to memory of 2572	2448	f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe	sc.exe
PID 2448 wrote to memory of 4792	2448	f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe	netsh.exe
PID 2448 wrote to memory of 4792	2448	f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe	netsh.exe
PID 2448 wrote to memory of 4792	2448	f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe	netsh.exe
PID 1048 wrote to memory of 4100	1048	hcrbgldb.exe	svchost.exe
PID 1048 wrote to memory of 4100	1048	hcrbgldb.exe	svchost.exe
PID 1048 wrote to memory of 4100	1048	hcrbgldb.exe	svchost.exe
PID 1048 wrote to memory of 4100	1048	hcrbgldb.exe	svchost.exe
PID 1048 wrote to memory of 4100	1048	hcrbgldb.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2448

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rnmncbk\
2⤵
PID:4912

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hcrbgldb.exe" C:\Windows\SysWOW64\rnmncbk\
2⤵
PID:3668

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create rnmncbk binPath= "C:\Windows\SysWOW64\rnmncbk\hcrbgldb.exe /d\"C:\Users\Admin\AppData\Local\Temp\f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:4984

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description rnmncbk "wifi internet conection"
2⤵
- Launches sc.exe
PID:4288

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start rnmncbk
2⤵
- Launches sc.exe
PID:2572

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:4792

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2448 -s 1172
2⤵
- Program crash
PID:3008

C:\Windows\SysWOW64\rnmncbk\hcrbgldb.exe
C:\Windows\SysWOW64\rnmncbk\hcrbgldb.exe /d"C:\Users\Admin\AppData\Local\Temp\f2210787bb2598f8739155f21507eb79_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1048

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:4100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1048 -s 520
2⤵
- Program crash
PID:1716

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 2448 -ip 2448
1⤵
PID:2724

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1048 -ip 1048
1⤵
PID:4104

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\hcrbgldb.exe
Filesize
10.2MB

MD5
eaf6ddd6f0761ce0a36be890d0d39688

SHA1
b32ccd385f43db0a73e78480fe845592f47691fb

SHA256
d6f464cf2029f304020de9aef0dc894a6ac51b5a01cb40282bb5cf27147f71f9

SHA512
fbe35c896d93b9a4c0565caaa26b42f7ac3d5510b679f67d88b7465c318eaaa24ec0cb4b23a4719ec4acfb364285ebe851085198cb7b2c9360f2973ed575ae9d

Download Submit
memory/1048-10-0x00000000005F0000-0x00000000006F0000-memory.dmp

Filesize
1024KB

Download
memory/1048-11-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1048-17-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2448-3-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2448-2-0x0000000000610000-0x0000000000623000-memory.dmp

Filesize
76KB

Download
memory/2448-8-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2448-9-0x0000000000610000-0x0000000000623000-memory.dmp

Filesize
76KB

Download
memory/2448-1-0x0000000000650000-0x0000000000750000-memory.dmp

Filesize
1024KB

Download
memory/4100-12-0x0000000000EB0000-0x0000000000EC5000-memory.dmp

Filesize
84KB

Download
memory/4100-16-0x0000000000EB0000-0x0000000000EC5000-memory.dmp

Filesize
84KB

Download
memory/4100-18-0x0000000000EB0000-0x0000000000EC5000-memory.dmp

Filesize
84KB

Download
memory/4100-19-0x0000000000EB0000-0x0000000000EC5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads