tofsee | 2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39

General

Target

2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe
Size

172KB
MD5

dafc043be699b11f059f25d3df8360d0
SHA1

973a61daf7a94734fb1c8244b66042658f2642ce
SHA256

2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39
SHA512

6e69e2488f170d9c453e8a41ce1a53ec372d097b1587c7c4351fc1b04fd1852e8ac23cfbfb11b02fd6627d2b67975b56450bc3f07058ee2c78b1e2b182eec9e2
SSDEEP

3072:P6oBRcjQ0GCmBrGltChf8jytCeJxyYVCK+mQEryy:P61mBrGbywejyjKpOy

Score

10^/10

tofsee persistence trojan

Malware Config

Extracted

Family

tofsee

C2

111.121.193.238

202.146.217.143

188.190.113.149

188.165.132.183

213.155.0.208

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:

cupfpshw.execupfpshw.exe

pid process

520 cupfpshw.exe
1512 cupfpshw.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1336 cmd.exe

pid	process
520	cupfpshw.exe
1512	cupfpshw.exe

pid	process
1336	cmd.exe

Loads dropped DLL 2 IoCs

Processes:

2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe

pid	process
1372	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe
1372	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\cupfpshw.exe\""	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.execupfpshw.execupfpshw.exe

description	pid	process	target process
PID 1480 set thread context of 1372	1480	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe
PID 520 set thread context of 1512	520	cupfpshw.exe	cupfpshw.exe
PID 1512 set thread context of 1720	1512	cupfpshw.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 SetWindowsHookEx 2 IoCs

Processes:

2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.execupfpshw.exe

pid process

1480 2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe
520 cupfpshw.exe

pid	process
1480	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe
520	cupfpshw.exe

Suspicious use of WriteProcessMemory 34 IoCs

Processes:

2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.execupfpshw.execupfpshw.exe

description	pid	process	target process
PID 1480 wrote to memory of 1372	1480	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe
PID 1480 wrote to memory of 1372	1480	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe
PID 1480 wrote to memory of 1372	1480	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe
PID 1480 wrote to memory of 1372	1480	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe
PID 1480 wrote to memory of 1372	1480	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe
PID 1480 wrote to memory of 1372	1480	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe
PID 1480 wrote to memory of 1372	1480	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe
PID 1480 wrote to memory of 1372	1480	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe
PID 1480 wrote to memory of 1372	1480	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe
PID 1480 wrote to memory of 1372	1480	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe
PID 1372 wrote to memory of 520	1372	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe	cupfpshw.exe
PID 1372 wrote to memory of 520	1372	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe	cupfpshw.exe
PID 1372 wrote to memory of 520	1372	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe	cupfpshw.exe
PID 1372 wrote to memory of 520	1372	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe	cupfpshw.exe
PID 1372 wrote to memory of 1336	1372	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe	cmd.exe
PID 1372 wrote to memory of 1336	1372	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe	cmd.exe
PID 1372 wrote to memory of 1336	1372	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe	cmd.exe
PID 1372 wrote to memory of 1336	1372	2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe	cmd.exe
PID 520 wrote to memory of 1512	520	cupfpshw.exe	cupfpshw.exe
PID 520 wrote to memory of 1512	520	cupfpshw.exe	cupfpshw.exe
PID 520 wrote to memory of 1512	520	cupfpshw.exe	cupfpshw.exe
PID 520 wrote to memory of 1512	520	cupfpshw.exe	cupfpshw.exe
PID 520 wrote to memory of 1512	520	cupfpshw.exe	cupfpshw.exe
PID 520 wrote to memory of 1512	520	cupfpshw.exe	cupfpshw.exe
PID 520 wrote to memory of 1512	520	cupfpshw.exe	cupfpshw.exe
PID 520 wrote to memory of 1512	520	cupfpshw.exe	cupfpshw.exe
PID 520 wrote to memory of 1512	520	cupfpshw.exe	cupfpshw.exe
PID 520 wrote to memory of 1512	520	cupfpshw.exe	cupfpshw.exe
PID 1512 wrote to memory of 1720	1512	cupfpshw.exe	svchost.exe
PID 1512 wrote to memory of 1720	1512	cupfpshw.exe	svchost.exe
PID 1512 wrote to memory of 1720	1512	cupfpshw.exe	svchost.exe
PID 1512 wrote to memory of 1720	1512	cupfpshw.exe	svchost.exe
PID 1512 wrote to memory of 1720	1512	cupfpshw.exe	svchost.exe
PID 1512 wrote to memory of 1720	1512	cupfpshw.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe
"C:\Users\Admin\AppData\Local\Temp\2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1480

C:\Users\Admin\AppData\Local\Temp\2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe
"C:\Users\Admin\AppData\Local\Temp\2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39.exe"
2⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1372

C:\Users\Admin\cupfpshw.exe
"C:\Users\Admin\cupfpshw.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:520

C:\Users\Admin\cupfpshw.exe
"C:\Users\Admin\cupfpshw.exe"
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1512

C:\Windows\SysWOW64\svchost.exe
svchost.exe
5⤵
PID:1720

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\6878.bat" "
3⤵
- Deletes itself
PID:1336

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\6878.bat
Filesize
302B

MD5
1158f227597a327b8c0d24d1c310703e

SHA1
8916d2f13f90d32d184b42193104608d7a4354b7

SHA256
a2db3ba8e66d004f0c1102d2a00cabc941aec32bd3b74f24aceea1e6a0b71e7e

SHA512
b1a4e0bef4d3cbee0644e687ffdd6f321efdcf6a00b0265ca868425bfdaa6d4dfbc4b9b5cb94ac05eaf962aff30555b1e08082e3d223bd73d769e48b9d17af67

Download Submit
C:\Users\Admin\cupfpshw.exe
Filesize
172KB

MD5
dafc043be699b11f059f25d3df8360d0

SHA1
973a61daf7a94734fb1c8244b66042658f2642ce

SHA256
2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39

SHA512
6e69e2488f170d9c453e8a41ce1a53ec372d097b1587c7c4351fc1b04fd1852e8ac23cfbfb11b02fd6627d2b67975b56450bc3f07058ee2c78b1e2b182eec9e2

Download Submit
C:\Users\Admin\cupfpshw.exe
Filesize
172KB

MD5
dafc043be699b11f059f25d3df8360d0

SHA1
973a61daf7a94734fb1c8244b66042658f2642ce

SHA256
2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39

SHA512
6e69e2488f170d9c453e8a41ce1a53ec372d097b1587c7c4351fc1b04fd1852e8ac23cfbfb11b02fd6627d2b67975b56450bc3f07058ee2c78b1e2b182eec9e2

Download Submit
C:\Users\Admin\cupfpshw.exe
Filesize
172KB

MD5
dafc043be699b11f059f25d3df8360d0

SHA1
973a61daf7a94734fb1c8244b66042658f2642ce

SHA256
2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39

SHA512
6e69e2488f170d9c453e8a41ce1a53ec372d097b1587c7c4351fc1b04fd1852e8ac23cfbfb11b02fd6627d2b67975b56450bc3f07058ee2c78b1e2b182eec9e2

Download Submit
\Users\Admin\cupfpshw.exe
Filesize
172KB

MD5
dafc043be699b11f059f25d3df8360d0

SHA1
973a61daf7a94734fb1c8244b66042658f2642ce

SHA256
2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39

SHA512
6e69e2488f170d9c453e8a41ce1a53ec372d097b1587c7c4351fc1b04fd1852e8ac23cfbfb11b02fd6627d2b67975b56450bc3f07058ee2c78b1e2b182eec9e2

Download Submit
\Users\Admin\cupfpshw.exe
Filesize
172KB

MD5
dafc043be699b11f059f25d3df8360d0

SHA1
973a61daf7a94734fb1c8244b66042658f2642ce

SHA256
2cb8331dab2c0c108691947e56b4172716b1d23fd064a932d6202f7cf76feb39

SHA512
6e69e2488f170d9c453e8a41ce1a53ec372d097b1587c7c4351fc1b04fd1852e8ac23cfbfb11b02fd6627d2b67975b56450bc3f07058ee2c78b1e2b182eec9e2

Download Submit
memory/520-63-0x0000000000000000-mapping.dmp

Download
memory/1336-68-0x0000000000000000-mapping.dmp

Download
memory/1372-56-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1372-57-0x000000000040782C-mapping.dmp

Download
memory/1372-67-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1372-60-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1372-59-0x0000000076261000-0x0000000076263000-memory.dmp

Filesize
8KB

Download
memory/1512-76-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1512-72-0x000000000040782C-mapping.dmp

Download
memory/1512-77-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1512-82-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1720-78-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1720-80-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1720-85-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1720-81-0x000000000008782C-mapping.dmp

Download
memory/1720-86-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1720-87-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads