tofsee | 2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042

General

Target

8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe
Size

142KB
MD5

8ae987e80e12b61362f37b47ea603a71
SHA1

29a2d26bf4d8a74d4ded2bba39af14e2af83016e
SHA256

2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042
SHA512

d47df314643d82af87feb43f79ae5fef1ad61aa449755d0d73abee307bdc93fbcb53529c7fe8039e7bfb051d8041b084b3efd00d868377881b6c46b86c0f6ef7
SSDEEP

3072:i9Tpm/Wn6280tMkFG6ASkHDmdxPvrknn3ost0rpNU99f:9eJLHkjmbwn3ojNg

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

3256 netsh.exe

pid	process
3256	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\xrqcvzft\ImagePath = "C:\\Windows\\SysWOW64\\xrqcvzft\\cttmwugu.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:

8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4668 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

cttmwugu.exe

pid process

4080 cttmwugu.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

cttmwugu.exe

description pid process target process

PID 4080 set thread context of 4668 4080 cttmwugu.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

2324 sc.exe
5008 sc.exe
3092 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4668	svchost.exe

pid	process
4080	cttmwugu.exe

description	pid	process	target process
PID 4080 set thread context of 4668	4080	cttmwugu.exe	svchost.exe

pid	process
2324	sc.exe
5008	sc.exe
3092	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.execttmwugu.exe

description	pid	process	target process
PID 844 wrote to memory of 496	844	8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe	cmd.exe
PID 844 wrote to memory of 496	844	8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe	cmd.exe
PID 844 wrote to memory of 496	844	8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe	cmd.exe
PID 844 wrote to memory of 1748	844	8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe	cmd.exe
PID 844 wrote to memory of 1748	844	8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe	cmd.exe
PID 844 wrote to memory of 1748	844	8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe	cmd.exe
PID 844 wrote to memory of 2324	844	8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe	sc.exe
PID 844 wrote to memory of 2324	844	8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe	sc.exe
PID 844 wrote to memory of 2324	844	8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe	sc.exe
PID 844 wrote to memory of 5008	844	8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe	sc.exe
PID 844 wrote to memory of 5008	844	8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe	sc.exe
PID 844 wrote to memory of 5008	844	8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe	sc.exe
PID 844 wrote to memory of 3092	844	8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe	sc.exe
PID 844 wrote to memory of 3092	844	8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe	sc.exe
PID 844 wrote to memory of 3092	844	8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe	sc.exe
PID 844 wrote to memory of 3256	844	8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe	netsh.exe
PID 844 wrote to memory of 3256	844	8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe	netsh.exe
PID 844 wrote to memory of 3256	844	8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe	netsh.exe
PID 4080 wrote to memory of 4668	4080	cttmwugu.exe	svchost.exe
PID 4080 wrote to memory of 4668	4080	cttmwugu.exe	svchost.exe
PID 4080 wrote to memory of 4668	4080	cttmwugu.exe	svchost.exe
PID 4080 wrote to memory of 4668	4080	cttmwugu.exe	svchost.exe
PID 4080 wrote to memory of 4668	4080	cttmwugu.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:844

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xrqcvzft\
2⤵
PID:496

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cttmwugu.exe" C:\Windows\SysWOW64\xrqcvzft\
2⤵
PID:1748

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create xrqcvzft binPath= "C:\Windows\SysWOW64\xrqcvzft\cttmwugu.exe /d\"C:\Users\Admin\AppData\Local\Temp\8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2324

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description xrqcvzft "wifi internet conection"
2⤵
- Launches sc.exe
PID:5008

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start xrqcvzft
2⤵
- Launches sc.exe
PID:3092

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:3256

C:\Windows\SysWOW64\xrqcvzft\cttmwugu.exe
C:\Windows\SysWOW64\xrqcvzft\cttmwugu.exe /d"C:\Users\Admin\AppData\Local\Temp\8ae987e80e12b61362f37b47ea603a71_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4080

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:4668

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=4064 --field-trial-handle=2356,i,13261194862334667799,7441241219475888176,262144 --variations-seed-version /prefetch:8
1⤵
PID:4404

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\cttmwugu.exe

Filesize
12.8MB

MD5
0d07efb96ca4b90cff46af914f774651

SHA1
c2632ef9d0ac6c0bf316bdd1c254fee2defce83d

SHA256
6bb14f56163f9d7618556cd2011584f228a3e07fb8bde0dd3a0a2187a2fade80

SHA512
6d57167e966a17cd2a143ab3b3da38ffc96a57af1797396f3aa21b9e6f29d0648ede1e0983ca3b47bb106eff71e6744e1fc9e0bfc9842a4e4fa187e94b9e3dc8

Download Submit
memory/844-0-0x0000000000590000-0x0000000000591000-memory.dmp

Filesize
4KB

Download
memory/844-1-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/844-2-0x00000000005A0000-0x00000000005A1000-memory.dmp

Filesize
4KB

Download
memory/844-5-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/844-6-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4080-8-0x0000000000690000-0x0000000000691000-memory.dmp

Filesize
4KB

Download
memory/4080-9-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4080-11-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4668-10-0x0000000000130000-0x0000000000145000-memory.dmp

Filesize
84KB

Download
memory/4668-13-0x0000000000130000-0x0000000000145000-memory.dmp

Filesize
84KB

Download
memory/4668-14-0x0000000000130000-0x0000000000145000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads