tofsee | e4758bb01373db02994ec59df48e9b43b85cd501a7f139a4435b91277969b509

General

Target

f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe
Size

14.6MB
MD5

f24a835a5bf8192c6ab0a670cfa39db4
SHA1

f7f59f05cd64bbc0867e329f98cf0bd6b5e440b4
SHA256

e4758bb01373db02994ec59df48e9b43b85cd501a7f139a4435b91277969b509
SHA512

6726b501249c2be25bca975ce43b12c3d040999cee73ddc015562afab0b94e6ef8767593f760b4e6402abd16907ffd625104b71901d79ab9697126a6c3f16917
SSDEEP

393216:vwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwws:

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

460 netsh.exe

pid	process
460	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\mvnmiegd\ImagePath = "C:\\Windows\\SysWOW64\\mvnmiegd\\keevgpgi.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:

f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-776854024-226333264-2052258302-1000\Control Panel\International\Geo\Nation	f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

888 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

keevgpgi.exe

pid process

5028 keevgpgi.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

keevgpgi.exe

description pid process target process

PID 5028 set thread context of 888 5028 keevgpgi.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

4984 sc.exe
4264 sc.exe
3336 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

2452 5092 WerFault.exe f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe
3384 5028 WerFault.exe keevgpgi.exe

pid	process
888	svchost.exe

pid	process
5028	keevgpgi.exe

description	pid	process	target process
PID 5028 set thread context of 888	5028	keevgpgi.exe	svchost.exe

pid	process
4984	sc.exe
4264	sc.exe
3336	sc.exe

pid	pid_target	process	target process
2452	5092	WerFault.exe	f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe
3384	5028	WerFault.exe	keevgpgi.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exekeevgpgi.exe

description	pid	process	target process
PID 5092 wrote to memory of 2420	5092	f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe	cmd.exe
PID 5092 wrote to memory of 2420	5092	f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe	cmd.exe
PID 5092 wrote to memory of 2420	5092	f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe	cmd.exe
PID 5092 wrote to memory of 556	5092	f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe	cmd.exe
PID 5092 wrote to memory of 556	5092	f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe	cmd.exe
PID 5092 wrote to memory of 556	5092	f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe	cmd.exe
PID 5092 wrote to memory of 4264	5092	f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe	sc.exe
PID 5092 wrote to memory of 4264	5092	f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe	sc.exe
PID 5092 wrote to memory of 4264	5092	f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe	sc.exe
PID 5092 wrote to memory of 3336	5092	f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe	sc.exe
PID 5092 wrote to memory of 3336	5092	f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe	sc.exe
PID 5092 wrote to memory of 3336	5092	f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe	sc.exe
PID 5092 wrote to memory of 4984	5092	f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe	sc.exe
PID 5092 wrote to memory of 4984	5092	f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe	sc.exe
PID 5092 wrote to memory of 4984	5092	f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe	sc.exe
PID 5092 wrote to memory of 460	5092	f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe	netsh.exe
PID 5092 wrote to memory of 460	5092	f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe	netsh.exe
PID 5092 wrote to memory of 460	5092	f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe	netsh.exe
PID 5028 wrote to memory of 888	5028	keevgpgi.exe	svchost.exe
PID 5028 wrote to memory of 888	5028	keevgpgi.exe	svchost.exe
PID 5028 wrote to memory of 888	5028	keevgpgi.exe	svchost.exe
PID 5028 wrote to memory of 888	5028	keevgpgi.exe	svchost.exe
PID 5028 wrote to memory of 888	5028	keevgpgi.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5092

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mvnmiegd\
2⤵
PID:2420

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\keevgpgi.exe" C:\Windows\SysWOW64\mvnmiegd\
2⤵
PID:556

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create mvnmiegd binPath= "C:\Windows\SysWOW64\mvnmiegd\keevgpgi.exe /d\"C:\Users\Admin\AppData\Local\Temp\f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:4264

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description mvnmiegd "wifi internet conection"
2⤵
- Launches sc.exe
PID:3336

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start mvnmiegd
2⤵
- Launches sc.exe
PID:4984

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:460

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 5092 -s 676
2⤵
- Program crash
PID:2452

C:\Windows\SysWOW64\mvnmiegd\keevgpgi.exe
C:\Windows\SysWOW64\mvnmiegd\keevgpgi.exe /d"C:\Users\Admin\AppData\Local\Temp\f24a835a5bf8192c6ab0a670cfa39db4_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5028

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 5028 -s 512
2⤵
- Program crash
PID:3384

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 5092 -ip 5092
1⤵
PID:948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 5028 -ip 5028
1⤵
PID:1160

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

Replay Monitor

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Downloads

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

Filesize
14.3MB

MD5
55cb4941b8013a9ea9fa45d1b77165c3

SHA1
a015f9d1ed0d4966af27711a600d3624da38dafd

SHA256
a62b0d91c6151b4b9bf07ed45d3d46aeb071d9b180b7e8ef9ee0e6669caa787d

SHA512
2eda255a2f6098f43cdfe8e7ee7bb647e3a8f51358624bd3ef27c5381f92ee242fe5f37b11c5ef41712359b67563bb0a7cd3444ba7a10138ea52a0b5064858cc

Download Submit
memory/888-11-0x0000000000530000-0x0000000000545000-memory.dmp

Filesize
84KB

Download
memory/888-15-0x0000000000530000-0x0000000000545000-memory.dmp

Filesize
84KB

Download
memory/888-16-0x0000000000530000-0x0000000000545000-memory.dmp

Filesize
84KB

Download
memory/888-18-0x0000000000530000-0x0000000000545000-memory.dmp

Filesize
84KB

Download
memory/5028-10-0x0000000000AB0000-0x0000000000BB0000-memory.dmp

Filesize
1024KB

Download
memory/5028-12-0x0000000000400000-0x00000000009A2000-memory.dmp

Filesize
5.6MB

Download
memory/5028-17-0x0000000000400000-0x00000000009A2000-memory.dmp

Filesize
5.6MB

Download
memory/5092-4-0x0000000000400000-0x00000000009A2000-memory.dmp

Filesize
5.6MB

Download
memory/5092-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/5092-7-0x0000000000400000-0x00000000009A2000-memory.dmp

Filesize
5.6MB

Download
memory/5092-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/5092-1-0x0000000000B20000-0x0000000000C20000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads