tofsee | 9b05b05532fac19bb2945c236b032037a7cd0b0d5149fccfc30e7fb3f6b825f1

General

Target

9b05b05532fac19bb2945c236b032037a7cd0b0d5149fccfc30e7fb3f6b825f1.exe
Size

112KB
MD5

5a6a31f7c26edcbd7451fc754cededa0
SHA1

2d206c40b063cc9734eaff5f3404a02c891a3715
SHA256

9b05b05532fac19bb2945c236b032037a7cd0b0d5149fccfc30e7fb3f6b825f1
SHA512

78e32f09e75314b317c14e4c0b1f9b1a82aa8090ca494b03e6f4cb717a7554d05029441da119972cb7053cef5dfb5095ef92559f2113bbce8cce8febbefbdba5
SSDEEP

3072:stS1US4uacfhaYd2gya+DW58DzS2jbxWGqeo:stS7faqcYd2seHSbGqeo

Score

10^/10

tofsee persistence trojan

Malware Config

Extracted

Family

tofsee

C2

91.218.39.211

188.130.237.44

91.204.162.103

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
Executes dropped EXE 1 IoCs

Processes:

tumkkewj.exe

pid process

1896 tumkkewj.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1716 cmd.exe

pid	process
1896	tumkkewj.exe

pid	process
1716	cmd.exe

Loads dropped DLL 2 IoCs

Processes:

9b05b05532fac19bb2945c236b032037a7cd0b0d5149fccfc30e7fb3f6b825f1.exe

pid	process
2028	9b05b05532fac19bb2945c236b032037a7cd0b0d5149fccfc30e7fb3f6b825f1.exe
2028	9b05b05532fac19bb2945c236b032037a7cd0b0d5149fccfc30e7fb3f6b825f1.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

9b05b05532fac19bb2945c236b032037a7cd0b0d5149fccfc30e7fb3f6b825f1.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\tumkkewj.exe\""	9b05b05532fac19bb2945c236b032037a7cd0b0d5149fccfc30e7fb3f6b825f1.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

tumkkewj.exe

description pid process target process

PID 1896 set thread context of 2012 1896 tumkkewj.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 UnmapMainImage 2 IoCs

Processes:

9b05b05532fac19bb2945c236b032037a7cd0b0d5149fccfc30e7fb3f6b825f1.exetumkkewj.exe

pid process

2028 9b05b05532fac19bb2945c236b032037a7cd0b0d5149fccfc30e7fb3f6b825f1.exe
1896 tumkkewj.exe

description	pid	process	target process
PID 1896 set thread context of 2012	1896	tumkkewj.exe	svchost.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

9b05b05532fac19bb2945c236b032037a7cd0b0d5149fccfc30e7fb3f6b825f1.exetumkkewj.exe

description	pid	process	target process
PID 2028 wrote to memory of 1896	2028	9b05b05532fac19bb2945c236b032037a7cd0b0d5149fccfc30e7fb3f6b825f1.exe	tumkkewj.exe
PID 2028 wrote to memory of 1896	2028	9b05b05532fac19bb2945c236b032037a7cd0b0d5149fccfc30e7fb3f6b825f1.exe	tumkkewj.exe
PID 2028 wrote to memory of 1896	2028	9b05b05532fac19bb2945c236b032037a7cd0b0d5149fccfc30e7fb3f6b825f1.exe	tumkkewj.exe
PID 2028 wrote to memory of 1896	2028	9b05b05532fac19bb2945c236b032037a7cd0b0d5149fccfc30e7fb3f6b825f1.exe	tumkkewj.exe
PID 1896 wrote to memory of 2012	1896	tumkkewj.exe	svchost.exe
PID 1896 wrote to memory of 2012	1896	tumkkewj.exe	svchost.exe
PID 1896 wrote to memory of 2012	1896	tumkkewj.exe	svchost.exe
PID 1896 wrote to memory of 2012	1896	tumkkewj.exe	svchost.exe
PID 1896 wrote to memory of 2012	1896	tumkkewj.exe	svchost.exe
PID 1896 wrote to memory of 2012	1896	tumkkewj.exe	svchost.exe
PID 2028 wrote to memory of 1716	2028	9b05b05532fac19bb2945c236b032037a7cd0b0d5149fccfc30e7fb3f6b825f1.exe	cmd.exe
PID 2028 wrote to memory of 1716	2028	9b05b05532fac19bb2945c236b032037a7cd0b0d5149fccfc30e7fb3f6b825f1.exe	cmd.exe
PID 2028 wrote to memory of 1716	2028	9b05b05532fac19bb2945c236b032037a7cd0b0d5149fccfc30e7fb3f6b825f1.exe	cmd.exe
PID 2028 wrote to memory of 1716	2028	9b05b05532fac19bb2945c236b032037a7cd0b0d5149fccfc30e7fb3f6b825f1.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\9b05b05532fac19bb2945c236b032037a7cd0b0d5149fccfc30e7fb3f6b825f1.exe
"C:\Users\Admin\AppData\Local\Temp\9b05b05532fac19bb2945c236b032037a7cd0b0d5149fccfc30e7fb3f6b825f1.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2028

C:\Users\Admin\tumkkewj.exe
"C:\Users\Admin\tumkkewj.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1896

C:\Windows\SysWOW64\svchost.exe
svchost.exe
3⤵
PID:2012

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\7474.bat" "
2⤵
- Deletes itself
PID:1716

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\7474.bat
Filesize
302B

MD5
9413b3b8a0a2edbe2b20203f78a217f9

SHA1
4bc9add396c1294d2a4476da31e621dafe7bd8e4

SHA256
0f6732948ca487fbc0a0c72865f5643c2d57520f56255a50249cda1f842c93ee

SHA512
30f7666f9076718bb996d8db17d5f8bc4f7b86190910337b7c2b1b05af425c7592fdd17e5fbfb71d734bcb53a7a7f812a165a5c76c0df44b718deb428a0751ca

Download Submit
C:\Users\Admin\tumkkewj.exe
Filesize
45.3MB

MD5
4f57ae03330e7da129f0252cd7009d49

SHA1
1213d8f09053f5b0f8071048b84e2321b50fd8eb

SHA256
6516feea45633470c46e5ce40d62245f085b5c273954f0f32edd4bf1eb4e6843

SHA512
a9cec7a759bf5a35b96da0ed901434f157dd1fa7c8e42e23e60fa7a14f76de8121cc1ded2e3c2dcfcf466276764648c660fe873bb058fbbe42f6f025794f7e66

Download Submit
C:\Users\Admin\tumkkewj.exe
Filesize
45.3MB

MD5
4f57ae03330e7da129f0252cd7009d49

SHA1
1213d8f09053f5b0f8071048b84e2321b50fd8eb

SHA256
6516feea45633470c46e5ce40d62245f085b5c273954f0f32edd4bf1eb4e6843

SHA512
a9cec7a759bf5a35b96da0ed901434f157dd1fa7c8e42e23e60fa7a14f76de8121cc1ded2e3c2dcfcf466276764648c660fe873bb058fbbe42f6f025794f7e66

Download Submit
\Users\Admin\tumkkewj.exe
Filesize
45.3MB

MD5
4f57ae03330e7da129f0252cd7009d49

SHA1
1213d8f09053f5b0f8071048b84e2321b50fd8eb

SHA256
6516feea45633470c46e5ce40d62245f085b5c273954f0f32edd4bf1eb4e6843

SHA512
a9cec7a759bf5a35b96da0ed901434f157dd1fa7c8e42e23e60fa7a14f76de8121cc1ded2e3c2dcfcf466276764648c660fe873bb058fbbe42f6f025794f7e66

Download Submit
\Users\Admin\tumkkewj.exe
Filesize
45.3MB

MD5
4f57ae03330e7da129f0252cd7009d49

SHA1
1213d8f09053f5b0f8071048b84e2321b50fd8eb

SHA256
6516feea45633470c46e5ce40d62245f085b5c273954f0f32edd4bf1eb4e6843

SHA512
a9cec7a759bf5a35b96da0ed901434f157dd1fa7c8e42e23e60fa7a14f76de8121cc1ded2e3c2dcfcf466276764648c660fe873bb058fbbe42f6f025794f7e66

Download Submit
memory/1716-73-0x0000000000000000-mapping.dmp

Download
memory/1896-63-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1896-62-0x0000000000240000-0x0000000000252000-memory.dmp

Filesize
72KB

Download
memory/1896-68-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1896-59-0x0000000000000000-mapping.dmp

Download
memory/2012-64-0x0000000000100000-0x0000000000112000-memory.dmp

Filesize
72KB

Download
memory/2012-67-0x000000000010785F-mapping.dmp

Download
memory/2012-66-0x0000000000100000-0x0000000000112000-memory.dmp

Filesize
72KB

Download
memory/2012-76-0x0000000000100000-0x0000000000112000-memory.dmp

Filesize
72KB

Download
memory/2012-77-0x0000000000100000-0x0000000000112000-memory.dmp

Filesize
72KB

Download
memory/2028-54-0x0000000075A71000-0x0000000075A73000-memory.dmp

Filesize
8KB

Download
memory/2028-56-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2028-74-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2028-55-0x0000000000240000-0x0000000000252000-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