tofsee | c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c

General

Target

c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe
Size

189KB
MD5

eeb7e6c7f4ab9c7830b11f7fd7fd2011
SHA1

beb0384bd419447ab753de454e8d071923928e98
SHA256

c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c
SHA512

ed7c18c625baa2aa36987dc23ecb56434d473e8fe060b6cecd2e3f043a923fa0cece81e442471271ec9d282042b0dd1cd0dd6abd7ca70aa01b6afe5186fae208
SSDEEP

3072:w7F7r/UFftCzKka2Y2dMOSbSl8+pOW3jfSgDdB:88F2BdbjbbjzDf

Score

10^/10

tofsee persistence trojan

Malware Config

Extracted

Family

tofsee

C2

91.121.4.118

rgtryhbgddtyh.biz

wertdghbyrukl.ch

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Executes dropped EXE 2 IoCs

Processes:

pccxwbu.exepccxwbu.exe

pid process

3548 pccxwbu.exe
4688 pccxwbu.exe

pid	process
3548	pccxwbu.exe
4688	pccxwbu.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:

c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\pccxwbu.exe\" /r"	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exepccxwbu.exepccxwbu.exe

description	pid	process	target process
PID 4428 set thread context of 896	4428	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe
PID 3548 set thread context of 4688	3548	pccxwbu.exe	pccxwbu.exe
PID 4688 set thread context of 4640	4688	pccxwbu.exe	svchost.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 29 IoCs

Processes:

c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exec768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exepccxwbu.exepccxwbu.exe

description	pid	process	target process
PID 4428 wrote to memory of 896	4428	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe
PID 4428 wrote to memory of 896	4428	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe
PID 4428 wrote to memory of 896	4428	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe
PID 4428 wrote to memory of 896	4428	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe
PID 4428 wrote to memory of 896	4428	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe
PID 4428 wrote to memory of 896	4428	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe
PID 4428 wrote to memory of 896	4428	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe
PID 4428 wrote to memory of 896	4428	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe
PID 4428 wrote to memory of 896	4428	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe
PID 896 wrote to memory of 3548	896	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe	pccxwbu.exe
PID 896 wrote to memory of 3548	896	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe	pccxwbu.exe
PID 896 wrote to memory of 3548	896	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe	pccxwbu.exe
PID 3548 wrote to memory of 4688	3548	pccxwbu.exe	pccxwbu.exe
PID 3548 wrote to memory of 4688	3548	pccxwbu.exe	pccxwbu.exe
PID 3548 wrote to memory of 4688	3548	pccxwbu.exe	pccxwbu.exe
PID 3548 wrote to memory of 4688	3548	pccxwbu.exe	pccxwbu.exe
PID 3548 wrote to memory of 4688	3548	pccxwbu.exe	pccxwbu.exe
PID 3548 wrote to memory of 4688	3548	pccxwbu.exe	pccxwbu.exe
PID 3548 wrote to memory of 4688	3548	pccxwbu.exe	pccxwbu.exe
PID 3548 wrote to memory of 4688	3548	pccxwbu.exe	pccxwbu.exe
PID 3548 wrote to memory of 4688	3548	pccxwbu.exe	pccxwbu.exe
PID 4688 wrote to memory of 4640	4688	pccxwbu.exe	svchost.exe
PID 4688 wrote to memory of 4640	4688	pccxwbu.exe	svchost.exe
PID 4688 wrote to memory of 4640	4688	pccxwbu.exe	svchost.exe
PID 4688 wrote to memory of 4640	4688	pccxwbu.exe	svchost.exe
PID 4688 wrote to memory of 4640	4688	pccxwbu.exe	svchost.exe
PID 896 wrote to memory of 2364	896	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe	cmd.exe
PID 896 wrote to memory of 2364	896	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe	cmd.exe
PID 896 wrote to memory of 2364	896	c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe
"C:\Users\Admin\AppData\Local\Temp\c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4428

C:\Users\Admin\AppData\Local\Temp\c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe
"C:\Users\Admin\AppData\Local\Temp\c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:896

C:\Users\Admin\pccxwbu.exe
"C:\Users\Admin\pccxwbu.exe" /r
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3548

C:\Users\Admin\pccxwbu.exe
"C:\Users\Admin\pccxwbu.exe" /r
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4688

C:\Windows\SysWOW64\svchost.exe
svchost.exe
5⤵
PID:4640

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\0865.bat" "
3⤵
PID:2364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 208 -p 4640 -ip 4640
1⤵
PID:1684

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\0865.bat
Filesize
135B

MD5
d68df8a31ba181db42b5dd40c8b3ce5c

SHA1
68e43aa995ea31afb318abbb545f84fc95dd8df4

SHA256
4fd5f22567817411e13799be168e4335e057b5ea3446f49173631f60bf4a3663

SHA512
5b562767fcd19608508077c30d1d37213a69a8c7fed8cae086d5ec1b755d7056d3fd7a3cb1497a214a366432804e3d74d30ac34b1da1ec2e784ebe5325fa692d

Download Submit
C:\Users\Admin\pccxwbu.exe
Filesize
189KB

MD5
eeb7e6c7f4ab9c7830b11f7fd7fd2011

SHA1
beb0384bd419447ab753de454e8d071923928e98

SHA256
c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c

SHA512
ed7c18c625baa2aa36987dc23ecb56434d473e8fe060b6cecd2e3f043a923fa0cece81e442471271ec9d282042b0dd1cd0dd6abd7ca70aa01b6afe5186fae208

Download Submit
C:\Users\Admin\pccxwbu.exe
Filesize
189KB

MD5
eeb7e6c7f4ab9c7830b11f7fd7fd2011

SHA1
beb0384bd419447ab753de454e8d071923928e98

SHA256
c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c

SHA512
ed7c18c625baa2aa36987dc23ecb56434d473e8fe060b6cecd2e3f043a923fa0cece81e442471271ec9d282042b0dd1cd0dd6abd7ca70aa01b6afe5186fae208

Download Submit
C:\Users\Admin\pccxwbu.exe
Filesize
189KB

MD5
eeb7e6c7f4ab9c7830b11f7fd7fd2011

SHA1
beb0384bd419447ab753de454e8d071923928e98

SHA256
c768addec07d2c59e940ab729f09c9e3c346bb7cd633a5ab351eb5bda695714c

SHA512
ed7c18c625baa2aa36987dc23ecb56434d473e8fe060b6cecd2e3f043a923fa0cece81e442471271ec9d282042b0dd1cd0dd6abd7ca70aa01b6afe5186fae208

Download Submit
memory/896-137-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/896-134-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/896-140-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/896-133-0x0000000000000000-mapping.dmp

Download
memory/896-152-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2364-156-0x0000000000000000-mapping.dmp

Download
memory/3548-138-0x0000000000000000-mapping.dmp

Download
memory/3548-141-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/3548-146-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/4428-136-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/4428-132-0x0000000000400000-0x0000000000435000-memory.dmp

Filesize
212KB

Download
memory/4640-151-0x0000000000110000-0x0000000000136000-memory.dmp

Filesize
152KB

Download
memory/4640-150-0x0000000000000000-mapping.dmp

Download
memory/4640-155-0x0000000000110000-0x0000000000136000-memory.dmp

Filesize
152KB

Download
memory/4688-149-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4688-143-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads