tofsee | 0a3cef3d7f5560ef2cf025e2b9976e90fd3ee9da43f3f7a6a375d1707b0ce7fe

General

Target

4848315a2917b333b8436587626fc48f_JaffaCakes118.exe
Size

255KB
MD5

4848315a2917b333b8436587626fc48f
SHA1

1c16c844bb29176162ca17936386cc49c91e6abc
SHA256

0a3cef3d7f5560ef2cf025e2b9976e90fd3ee9da43f3f7a6a375d1707b0ce7fe
SHA512

af3d71a6f55e2c68f640c12faeefdca463d5929ef0a0b822bb270935f5af793afa5bf03b10dc426177b98f3d9e8cc6fe0efec6a6cef13f96062c2db6cdb98438
SSDEEP

3072:0Em2GULHi0lnccicMhW7R4dtiTMQBZFEcNBZFEvNBZFEcNBZG:0sGUuecczMhWvT

Score

10^/10

tofsee persistence trojan

Malware Config

Extracted

Family

tofsee

C2

31.210.119.2

188.165.132.183

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:

4848315a2917b333b8436587626fc48f_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

Processes:

yusq.exeyusq.exe

pid process

1856 yusq.exe
2176 yusq.exe

pid	process
1856	yusq.exe
2176	yusq.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

4848315a2917b333b8436587626fc48f_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1705699165-553239100-4129523827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\yusq.exe\" /r"	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

4848315a2917b333b8436587626fc48f_JaffaCakes118.exeyusq.exeyusq.exe

description	pid	process	target process
PID 4256 set thread context of 2332	4256	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe
PID 1856 set thread context of 2176	1856	yusq.exe	yusq.exe
PID 2176 set thread context of 3744	2176	yusq.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

3684 3744 WerFault.exe svchost.exe

pid	pid_target	process	target process
3684	3744	WerFault.exe	svchost.exe

Suspicious use of WriteProcessMemory 29 IoCs

Processes:

4848315a2917b333b8436587626fc48f_JaffaCakes118.exe4848315a2917b333b8436587626fc48f_JaffaCakes118.exeyusq.exeyusq.exe

description	pid	process	target process
PID 4256 wrote to memory of 2332	4256	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe
PID 4256 wrote to memory of 2332	4256	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe
PID 4256 wrote to memory of 2332	4256	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe
PID 4256 wrote to memory of 2332	4256	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe
PID 4256 wrote to memory of 2332	4256	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe
PID 4256 wrote to memory of 2332	4256	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe
PID 4256 wrote to memory of 2332	4256	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe
PID 4256 wrote to memory of 2332	4256	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe
PID 4256 wrote to memory of 2332	4256	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe
PID 2332 wrote to memory of 1856	2332	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe	yusq.exe
PID 2332 wrote to memory of 1856	2332	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe	yusq.exe
PID 2332 wrote to memory of 1856	2332	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe	yusq.exe
PID 2332 wrote to memory of 2688	2332	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe	cmd.exe
PID 2332 wrote to memory of 2688	2332	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe	cmd.exe
PID 2332 wrote to memory of 2688	2332	4848315a2917b333b8436587626fc48f_JaffaCakes118.exe	cmd.exe
PID 1856 wrote to memory of 2176	1856	yusq.exe	yusq.exe
PID 1856 wrote to memory of 2176	1856	yusq.exe	yusq.exe
PID 1856 wrote to memory of 2176	1856	yusq.exe	yusq.exe
PID 1856 wrote to memory of 2176	1856	yusq.exe	yusq.exe
PID 1856 wrote to memory of 2176	1856	yusq.exe	yusq.exe
PID 1856 wrote to memory of 2176	1856	yusq.exe	yusq.exe
PID 1856 wrote to memory of 2176	1856	yusq.exe	yusq.exe
PID 1856 wrote to memory of 2176	1856	yusq.exe	yusq.exe
PID 1856 wrote to memory of 2176	1856	yusq.exe	yusq.exe
PID 2176 wrote to memory of 3744	2176	yusq.exe	svchost.exe
PID 2176 wrote to memory of 3744	2176	yusq.exe	svchost.exe
PID 2176 wrote to memory of 3744	2176	yusq.exe	svchost.exe
PID 2176 wrote to memory of 3744	2176	yusq.exe	svchost.exe
PID 2176 wrote to memory of 3744	2176	yusq.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\4848315a2917b333b8436587626fc48f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4848315a2917b333b8436587626fc48f_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4256

C:\Users\Admin\AppData\Local\Temp\4848315a2917b333b8436587626fc48f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4848315a2917b333b8436587626fc48f_JaffaCakes118.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2332

C:\Users\Admin\yusq.exe
"C:\Users\Admin\yusq.exe" /r
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1856

C:\Users\Admin\yusq.exe
"C:\Users\Admin\yusq.exe" /r
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2176

C:\Windows\SysWOW64\svchost.exe
svchost.exe
5⤵
PID:3744

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3744 -s 320
6⤵
- Program crash
PID:3684

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\5270.bat" "
3⤵
PID:2688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3744 -ip 3744
1⤵
PID:4476

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\5270.bat
Filesize
117B

MD5
16ad9c561a33f080510170bc39d0d012

SHA1
c04c458e809e9ff8718817f5ed155c0ce1ca431a

SHA256
3a21ce07e5010537e36da186870a25e16f5ba2ab586739396521705e9c616f00

SHA512
67897bff370faa9b470c80a30f051e2f2785da5f9f95a7625ccaa58fd101a0a31224791c3c00b67c63e544d788b6132c778ca86114b266859b26c9cb2f513834

Download Submit
C:\Users\Admin\yusq.exe
Filesize
255KB

MD5
4848315a2917b333b8436587626fc48f

SHA1
1c16c844bb29176162ca17936386cc49c91e6abc

SHA256
0a3cef3d7f5560ef2cf025e2b9976e90fd3ee9da43f3f7a6a375d1707b0ce7fe

SHA512
af3d71a6f55e2c68f640c12faeefdca463d5929ef0a0b822bb270935f5af793afa5bf03b10dc426177b98f3d9e8cc6fe0efec6a6cef13f96062c2db6cdb98438

Download Submit
memory/2332-0-0x0000000000400000-0x0000000000436000-memory.dmp

Filesize
216KB

Download
memory/2332-2-0x0000000000400000-0x0000000000436000-memory.dmp

Filesize
216KB

Download
memory/2332-4-0x0000000000400000-0x0000000000436000-memory.dmp

Filesize
216KB

Download
memory/2332-11-0x0000000000400000-0x0000000000436000-memory.dmp

Filesize
216KB

Download
memory/3744-18-0x0000000000790000-0x00000000007C6000-memory.dmp

Filesize
216KB

Download
memory/3744-23-0x0000000000790000-0x00000000007C6000-memory.dmp

Filesize
216KB

Download
memory/3744-27-0x0000000000790000-0x00000000007C6000-memory.dmp

Filesize
216KB

Download
memory/3744-28-0x0000000002800000-0x0000000002801000-memory.dmp

Filesize
4KB

Download
memory/3744-29-0x0000000000790000-0x00000000007C6000-memory.dmp

Filesize
216KB

Download
memory/3744-30-0x0000000000790000-0x00000000007C6000-memory.dmp

Filesize
216KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads