tofsee | 46c423ab1e4f0347a402ae2c5a6c90cbf9948ec408502fd3a5f585495dc632ac

General

Target

f8f833d107384d641da35abab88050e3_JaffaCakes118.exe
Size

11.5MB
MD5

f8f833d107384d641da35abab88050e3
SHA1

95d740f7606d93ed86a451a8fbdcec91c0c94bf7
SHA256

46c423ab1e4f0347a402ae2c5a6c90cbf9948ec408502fd3a5f585495dc632ac
SHA512

267268cdd2ddc721c3c830c7935bcf78791d84308ea41df227382c186c3b43c83608407aa9bc039895cda04013a120d0bbc623ccc812e7d11640c0155e719e7c
SSDEEP

24576:jT8rgnPp+RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRv:dp+

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

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

2264 netsh.exe

pid	process
2264	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\lvaafjqi\ImagePath = "C:\\Windows\\SysWOW64\\lvaafjqi\\zrzowuyw.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:

f8f833d107384d641da35abab88050e3_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	f8f833d107384d641da35abab88050e3_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

5012 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

zrzowuyw.exe

pid process

2348 zrzowuyw.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

zrzowuyw.exe

description pid process target process

PID 2348 set thread context of 5012 2348 zrzowuyw.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

624 sc.exe
4676 sc.exe
4692 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
5012	svchost.exe

pid	process
2348	zrzowuyw.exe

description	pid	process	target process
PID 2348 set thread context of 5012	2348	zrzowuyw.exe	svchost.exe

pid	process
624	sc.exe
4676	sc.exe
4692	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f8f833d107384d641da35abab88050e3_JaffaCakes118.exezrzowuyw.exe

description	pid	process	target process
PID 1932 wrote to memory of 4908	1932	f8f833d107384d641da35abab88050e3_JaffaCakes118.exe	cmd.exe
PID 1932 wrote to memory of 4908	1932	f8f833d107384d641da35abab88050e3_JaffaCakes118.exe	cmd.exe
PID 1932 wrote to memory of 4908	1932	f8f833d107384d641da35abab88050e3_JaffaCakes118.exe	cmd.exe
PID 1932 wrote to memory of 1216	1932	f8f833d107384d641da35abab88050e3_JaffaCakes118.exe	cmd.exe
PID 1932 wrote to memory of 1216	1932	f8f833d107384d641da35abab88050e3_JaffaCakes118.exe	cmd.exe
PID 1932 wrote to memory of 1216	1932	f8f833d107384d641da35abab88050e3_JaffaCakes118.exe	cmd.exe
PID 1932 wrote to memory of 624	1932	f8f833d107384d641da35abab88050e3_JaffaCakes118.exe	sc.exe
PID 1932 wrote to memory of 624	1932	f8f833d107384d641da35abab88050e3_JaffaCakes118.exe	sc.exe
PID 1932 wrote to memory of 624	1932	f8f833d107384d641da35abab88050e3_JaffaCakes118.exe	sc.exe
PID 1932 wrote to memory of 4676	1932	f8f833d107384d641da35abab88050e3_JaffaCakes118.exe	sc.exe
PID 1932 wrote to memory of 4676	1932	f8f833d107384d641da35abab88050e3_JaffaCakes118.exe	sc.exe
PID 1932 wrote to memory of 4676	1932	f8f833d107384d641da35abab88050e3_JaffaCakes118.exe	sc.exe
PID 1932 wrote to memory of 4692	1932	f8f833d107384d641da35abab88050e3_JaffaCakes118.exe	sc.exe
PID 1932 wrote to memory of 4692	1932	f8f833d107384d641da35abab88050e3_JaffaCakes118.exe	sc.exe
PID 1932 wrote to memory of 4692	1932	f8f833d107384d641da35abab88050e3_JaffaCakes118.exe	sc.exe
PID 1932 wrote to memory of 2264	1932	f8f833d107384d641da35abab88050e3_JaffaCakes118.exe	netsh.exe
PID 1932 wrote to memory of 2264	1932	f8f833d107384d641da35abab88050e3_JaffaCakes118.exe	netsh.exe
PID 1932 wrote to memory of 2264	1932	f8f833d107384d641da35abab88050e3_JaffaCakes118.exe	netsh.exe
PID 2348 wrote to memory of 5012	2348	zrzowuyw.exe	svchost.exe
PID 2348 wrote to memory of 5012	2348	zrzowuyw.exe	svchost.exe
PID 2348 wrote to memory of 5012	2348	zrzowuyw.exe	svchost.exe
PID 2348 wrote to memory of 5012	2348	zrzowuyw.exe	svchost.exe
PID 2348 wrote to memory of 5012	2348	zrzowuyw.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f8f833d107384d641da35abab88050e3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f8f833d107384d641da35abab88050e3_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1932

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lvaafjqi\
2⤵
PID:4908

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zrzowuyw.exe" C:\Windows\SysWOW64\lvaafjqi\
2⤵
PID:1216

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create lvaafjqi binPath= "C:\Windows\SysWOW64\lvaafjqi\zrzowuyw.exe /d\"C:\Users\Admin\AppData\Local\Temp\f8f833d107384d641da35abab88050e3_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:624

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description lvaafjqi "wifi internet conection"
2⤵
- Launches sc.exe
PID:4676

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start lvaafjqi
2⤵
- Launches sc.exe
PID:4692

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:2264

C:\Windows\SysWOW64\lvaafjqi\zrzowuyw.exe
C:\Windows\SysWOW64\lvaafjqi\zrzowuyw.exe /d"C:\Users\Admin\AppData\Local\Temp\f8f833d107384d641da35abab88050e3_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2348

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:5012

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1424 --field-trial-handle=2180,i,12780723798465539942,12010519452607841069,262144 --variations-seed-version /prefetch:8
1⤵
PID:540

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\zrzowuyw.exe

Filesize
12.7MB

MD5
49db012d48aecaff1240bee6892339be

SHA1
284042ffcf175a3a3f9f59815c4563bff0a21448

SHA256
76b9093a0f89ad53a595c43ebf28d135da1c6dffb363653b7f7302947f873d7b

SHA512
e8aaaaf6bbc2d81a056fb4d56a063a0204012bd253cc3683d2e02a7681e0153d0768c0a5752bc166112a396c488920625eb57e23388657f907f8b02a38364d86

Download Submit
memory/1932-9-0x00000000009C0000-0x00000000009D3000-memory.dmp

Filesize
76KB

Download
memory/1932-3-0x0000000000400000-0x00000000008EE000-memory.dmp

Filesize
4.9MB

Download
memory/1932-5-0x0000000000400000-0x00000000008EE000-memory.dmp

Filesize
4.9MB

Download
memory/1932-2-0x00000000009C0000-0x00000000009D3000-memory.dmp

Filesize
76KB

Download
memory/1932-8-0x0000000000400000-0x00000000008EE000-memory.dmp

Filesize
4.9MB

Download
memory/1932-1-0x0000000000A20000-0x0000000000B20000-memory.dmp

Filesize
1024KB

Download
memory/2348-11-0x0000000000A70000-0x0000000000B70000-memory.dmp

Filesize
1024KB

Download
memory/2348-12-0x0000000000400000-0x00000000008EE000-memory.dmp

Filesize
4.9MB

Download
memory/2348-15-0x0000000000400000-0x00000000008EE000-memory.dmp

Filesize
4.9MB

Download
memory/5012-13-0x0000000000600000-0x0000000000615000-memory.dmp

Filesize
84KB

Download
memory/5012-18-0x0000000000600000-0x0000000000615000-memory.dmp

Filesize
84KB

Download
memory/5012-19-0x0000000000600000-0x0000000000615000-memory.dmp

Filesize
84KB

Download
memory/5012-20-0x0000000000600000-0x0000000000615000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads