tofsee | 24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916

General

Target

24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe
Size

137KB
MD5

911c4ae779e7af73f21e1afdfeb951f1
SHA1

bc95d722e615b2862ffbd745944ac1dafa189943
SHA256

24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916
SHA512

97901a6f794124dd67ffcc1e0e97c4639b8b35ab8ed15ad249a35a8eb82491bc50283c58e94dad8d5efd6550f0ac0364b89c34ad1a91c4e90f5755956dd04cbd

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

jmwcjund.exe

pid process

4988 jmwcjund.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4392 netsh.exe

pid	process
4988	jmwcjund.exe

pid	process
4392	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\jeztwdce\ImagePath = "C:\\Windows\\SysWOW64\\jeztwdce\\jmwcjund.exe"	svchost.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:

24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

jmwcjund.exe

description pid process target process

PID 4988 set thread context of 1328 4988 jmwcjund.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

4592 sc.exe
4552 sc.exe
2992 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	pid	process	target process
PID 4988 set thread context of 1328	4988	jmwcjund.exe	svchost.exe

pid	process
4592	sc.exe
4552	sc.exe
2992	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exejmwcjund.exe

description	pid	process	target process
PID 2560 wrote to memory of 4468	2560	24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe	cmd.exe
PID 2560 wrote to memory of 4468	2560	24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe	cmd.exe
PID 2560 wrote to memory of 4468	2560	24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe	cmd.exe
PID 2560 wrote to memory of 5000	2560	24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe	cmd.exe
PID 2560 wrote to memory of 5000	2560	24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe	cmd.exe
PID 2560 wrote to memory of 5000	2560	24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe	cmd.exe
PID 2560 wrote to memory of 4592	2560	24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe	sc.exe
PID 2560 wrote to memory of 4592	2560	24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe	sc.exe
PID 2560 wrote to memory of 4592	2560	24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe	sc.exe
PID 2560 wrote to memory of 4552	2560	24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe	sc.exe
PID 2560 wrote to memory of 4552	2560	24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe	sc.exe
PID 2560 wrote to memory of 4552	2560	24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe	sc.exe
PID 2560 wrote to memory of 2992	2560	24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe	sc.exe
PID 2560 wrote to memory of 2992	2560	24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe	sc.exe
PID 2560 wrote to memory of 2992	2560	24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe	sc.exe
PID 2560 wrote to memory of 4392	2560	24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe	netsh.exe
PID 2560 wrote to memory of 4392	2560	24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe	netsh.exe
PID 2560 wrote to memory of 4392	2560	24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe	netsh.exe
PID 4988 wrote to memory of 1328	4988	jmwcjund.exe	svchost.exe
PID 4988 wrote to memory of 1328	4988	jmwcjund.exe	svchost.exe
PID 4988 wrote to memory of 1328	4988	jmwcjund.exe	svchost.exe
PID 4988 wrote to memory of 1328	4988	jmwcjund.exe	svchost.exe
PID 4988 wrote to memory of 1328	4988	jmwcjund.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe
"C:\Users\Admin\AppData\Local\Temp\24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2560

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jeztwdce\
2⤵
PID:4468

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jmwcjund.exe" C:\Windows\SysWOW64\jeztwdce\
2⤵
PID:5000

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create jeztwdce binPath= "C:\Windows\SysWOW64\jeztwdce\jmwcjund.exe /d\"C:\Users\Admin\AppData\Local\Temp\24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:4592

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description jeztwdce "wifi internet conection"
2⤵
- Launches sc.exe
PID:4552

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start jeztwdce
2⤵
- Launches sc.exe
PID:2992

C:\Windows\SysWOW64\netsh.exe
"C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
2⤵
- Modifies Windows Firewall
PID:4392

C:\Windows\SysWOW64\jeztwdce\jmwcjund.exe
C:\Windows\SysWOW64\jeztwdce\jmwcjund.exe /d"C:\Users\Admin\AppData\Local\Temp\24a4530516dfca76a310740a3abeb76b546956d54144bf96d45cba853f9dc916.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4988

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
PID:1328

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

New Service

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

New Service

1

T1050

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\jmwcjund.exe
Filesize
11.3MB

MD5
0f9339dccb647cf6fe5acc0acd5a7354

SHA1
dbab55362521124d8e589a80827c3ba2604d0a22

SHA256
b357e861c0e790b0d8cea02b7387504d0d7c1357242b0d36cd105e5e1f2ecca9

SHA512
b60ede37f9d5ef064856f503e29d7f117b31fe96b8dbbfe2cc8819b971643fb365648612d0a459ee7172777129c526ccc0eefb9ac007e07fb43836620d82fbb7

Download Submit
C:\Windows\SysWOW64\jeztwdce\jmwcjund.exe
Filesize
11.3MB

MD5
0f9339dccb647cf6fe5acc0acd5a7354

SHA1
dbab55362521124d8e589a80827c3ba2604d0a22

SHA256
b357e861c0e790b0d8cea02b7387504d0d7c1357242b0d36cd105e5e1f2ecca9

SHA512
b60ede37f9d5ef064856f503e29d7f117b31fe96b8dbbfe2cc8819b971643fb365648612d0a459ee7172777129c526ccc0eefb9ac007e07fb43836620d82fbb7

Download Submit
memory/1328-145-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/1328-144-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/1328-143-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/1328-141-0x0000000000D90000-0x0000000000DA5000-memory.dmp

Filesize
84KB

Download
memory/1328-140-0x0000000000000000-mapping.dmp

Download
memory/2560-130-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2992-136-0x0000000000000000-mapping.dmp

Download
memory/4392-137-0x0000000000000000-mapping.dmp

Download
memory/4468-131-0x0000000000000000-mapping.dmp

Download
memory/4552-135-0x0000000000000000-mapping.dmp

Download
memory/4592-134-0x0000000000000000-mapping.dmp

Download
memory/4988-139-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/5000-132-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads