tofsee | ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2

General

Target

e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe
Size

98KB
MD5

e93b8f5dc41f87a69fcf19115e985860
SHA1

51c55e7ee1d68c26918c1d6e5082dd60f08cde6d
SHA256

ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2
SHA512

787bfdc8fad1d9cdf52f58d07ce91fab86f5b9a77891523722e1e71fb1087ee43fa07d1557158ce4b6fb982d30c2a208103c0d032b7bd6a3cec1254ff0c1b081
SSDEEP

1536:DOoZ86iHPT3qqj7XHLLvXArePDNlv9AEQKzcVsN9+GUROW3zC1hDaMrAJg7Ub+SJ:DdjsnvXtNlebocVsnUROMzC1NAJQO

Score

10^/10

tofsee discovery persistence trojan

Malware Config

Extracted

Family

tofsee

C2

64.20.54.234

rgtryhbgddtyh.biz

wertdghbyrukl.ch

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

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:

e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\Control Panel\International\Geo\Nation	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

Processes:

dold.exedold.exe

pid process

3080 dold.exe
4724 dold.exe

pid	process
3080	dold.exe
4724	dold.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\dold.exe\" /r"	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exedold.exedold.exe

description	pid	process	target process
PID 3716 set thread context of 4652	3716	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe
PID 3080 set thread context of 4724	3080	dold.exe	dold.exe
PID 4724 set thread context of 5016	4724	dold.exe	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

408 5016 WerFault.exe svchost.exe

pid	pid_target	process	target process
408	5016	WerFault.exe	svchost.exe

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exee93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exedold.exedold.execmd.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dold.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dold.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of UnmapMainImage 1 IoCs

Processes:

e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe

pid process

3716 e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe

pid	process
3716	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exee93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exedold.exedold.exe

description	pid	process	target process
PID 3716 wrote to memory of 4652	3716	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe
PID 3716 wrote to memory of 4652	3716	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe
PID 3716 wrote to memory of 4652	3716	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe
PID 3716 wrote to memory of 4652	3716	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe
PID 3716 wrote to memory of 4652	3716	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe
PID 3716 wrote to memory of 4652	3716	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe
PID 3716 wrote to memory of 4652	3716	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe
PID 3716 wrote to memory of 4652	3716	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe
PID 4652 wrote to memory of 3080	4652	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe	dold.exe
PID 4652 wrote to memory of 3080	4652	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe	dold.exe
PID 4652 wrote to memory of 3080	4652	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe	dold.exe
PID 3080 wrote to memory of 4724	3080	dold.exe	dold.exe
PID 3080 wrote to memory of 4724	3080	dold.exe	dold.exe
PID 3080 wrote to memory of 4724	3080	dold.exe	dold.exe
PID 3080 wrote to memory of 4724	3080	dold.exe	dold.exe
PID 3080 wrote to memory of 4724	3080	dold.exe	dold.exe
PID 3080 wrote to memory of 4724	3080	dold.exe	dold.exe
PID 3080 wrote to memory of 4724	3080	dold.exe	dold.exe
PID 3080 wrote to memory of 4724	3080	dold.exe	dold.exe
PID 4724 wrote to memory of 5016	4724	dold.exe	svchost.exe
PID 4724 wrote to memory of 5016	4724	dold.exe	svchost.exe
PID 4724 wrote to memory of 5016	4724	dold.exe	svchost.exe
PID 4724 wrote to memory of 5016	4724	dold.exe	svchost.exe
PID 4724 wrote to memory of 5016	4724	dold.exe	svchost.exe
PID 4652 wrote to memory of 3076	4652	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe	cmd.exe
PID 4652 wrote to memory of 3076	4652	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe	cmd.exe
PID 4652 wrote to memory of 3076	4652	e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3716

C:\Users\Admin\AppData\Local\Temp\e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e93b8f5dc41f87a69fcf19115e985860_JaffaCakes118.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4652

C:\Users\Admin\dold.exe
"C:\Users\Admin\dold.exe" /r
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3080

C:\Users\Admin\dold.exe
"C:\Users\Admin\dold.exe" /r
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4724

C:\Windows\SysWOW64\svchost.exe
svchost.exe
5⤵
- System Location Discovery: System Language Discovery
PID:5016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 5016 -s 320
6⤵
- Program crash
PID:408

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\6121.bat" "
3⤵
- System Location Discovery: System Language Discovery
PID:3076

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5016 -ip 5016
1⤵
PID:4488

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

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\6121.bat

Filesize
117B

MD5
29ae634b924626f108a4857622116511

SHA1
f293e14cda8bb3118184ed0cb47f37204ce7c9d5

SHA256
3663aa1e7897d2e6a4d0a0661a2c0a2e1f75dde26878b21632db1b883dded2a5

SHA512
8bb34df5a03af6f3b738cde5e5ebf70f4c4016c8c2cf38c350aad04670cbc113d0bddd191b88d694ab473f1a664e5ed765dd98793f2917c705410db3836e22f6

Download Submit
C:\Users\Admin\dold.exe

Filesize
98KB

MD5
e93b8f5dc41f87a69fcf19115e985860

SHA1
51c55e7ee1d68c26918c1d6e5082dd60f08cde6d

SHA256
ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2

SHA512
787bfdc8fad1d9cdf52f58d07ce91fab86f5b9a77891523722e1e71fb1087ee43fa07d1557158ce4b6fb982d30c2a208103c0d032b7bd6a3cec1254ff0c1b081

Download Submit
memory/4652-24-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4652-2-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4652-4-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4652-0-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4724-13-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/5016-19-0x00000000006D0000-0x00000000006E0000-memory.dmp

Filesize
64KB

Download
memory/5016-14-0x00000000006D0000-0x00000000006E0000-memory.dmp

Filesize
64KB

Download
memory/5016-27-0x00000000006D0000-0x00000000006E0000-memory.dmp

Filesize
64KB

Download
memory/5016-28-0x0000000000A90000-0x0000000000A91000-memory.dmp

Filesize
4KB

Download
memory/5016-29-0x00000000006D0000-0x00000000006E0000-memory.dmp

Filesize
64KB

Download
memory/5016-30-0x00000000006D0000-0x00000000006E0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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