tofsee | 319e892be206faef2546ccc009a46cb2062b15bada048d98d24dcccb6b517555

General

Target

ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe
Size

130KB
MD5

ff7353b61dcbc157e2f89034fdb72cf0
SHA1

9748ef9fe2a118e4c5ef75c4927a995183b96e59
SHA256

319e892be206faef2546ccc009a46cb2062b15bada048d98d24dcccb6b517555
SHA512

a1e64ccd703eac90809c45276d939258925d52b00250dbeb1dc837e7096078dcb02dc7864fc2bbe321535df296561e04cf906379e5f56c8c6a8096f04f71b74a
SSDEEP

1536:c8Id8o7aomglQQGF+f1tUlho4swrUzgRXAnTumTO7MGFSjq0ccQL:o+o7ZmQQT+clzdUzW4imCBSjqTL

Score

10^/10

tofsee discovery persistence trojan

Malware Config

Extracted

Family

tofsee

C2

94.242.250.149

91.218.38.245

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
Tofsee family
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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
1164	mzerwjck.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\mzerwjck.exe\""	ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1164 set thread context of 4196	1164	mzerwjck.exe	83

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4900	4196	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mzerwjck.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1048 wrote to memory of 1164	1048	ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe	82
PID 1048 wrote to memory of 1164	1048	ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe	82
PID 1048 wrote to memory of 1164	1048	ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe	82
PID 1164 wrote to memory of 4196	1164	mzerwjck.exe	83
PID 1164 wrote to memory of 4196	1164	mzerwjck.exe	83
PID 1164 wrote to memory of 4196	1164	mzerwjck.exe	83
PID 1164 wrote to memory of 4196	1164	mzerwjck.exe	83
PID 1164 wrote to memory of 4196	1164	mzerwjck.exe	83
PID 1048 wrote to memory of 5036	1048	ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe	86
PID 1048 wrote to memory of 5036	1048	ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe	86
PID 1048 wrote to memory of 5036	1048	ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe	86

C:\Users\Admin\AppData\Local\Temp\ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1048
- C:\Users\Admin\mzerwjck.exe
  "C:\Users\Admin\mzerwjck.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1164
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4196
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4196 -s 336
      4⤵
      Program crash
      PID:4900
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\0710.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4196 -ip 4196
1⤵
PID:1816

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\0710.bat

Filesize
266B

MD5
4b1ab0bd18560de50b909679547a61e3

SHA1
09b00025db301efc46d50fced1fabc0bd77dca2f

SHA256
05c8bda8c1a6cb69b34ab72efb6055b7fb7ed5eed9e6512c22af4f4f4697d397

SHA512
dee9437af7d27c2e6da959ab649d5223997fa5da2c0b2a925417d37147866454bba44d09d0490340c2d5853ede996f7aab745319c62087c2e92c84ae04e7dd4d

Download Submit
C:\Users\Admin\mzerwjck.exe

Filesize
40.6MB

MD5
97744a4c3ff92381e1428b90a1efa5a1

SHA1
e66dec3b9a283da9d7d9355a1554334a51edd33b

SHA256
96b8bd605266d6c7394bbc846acf4972df52024c0c5c911c65fad3ecc89707a9

SHA512
9feb26686056f85494a6a038a5cf3cef64f834ac91ce85a2fbb9e5a760a77c74ba1b8112b7755621a0ebb96985bfb03fc3edf0ec2c2440c765f3bb3e6fde9253

Download Submit
memory/1048-24-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1048-1-0x0000000002190000-0x00000000021A2000-memory.dmp

Filesize
72KB

Download
memory/1048-2-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1048-0-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/1048-25-0x0000000002190000-0x00000000021A2000-memory.dmp

Filesize
72KB

Download
memory/1164-8-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/1164-20-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1164-9-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/1164-10-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/4196-17-0x0000000000240000-0x0000000000252000-memory.dmp

Filesize
72KB

Download
memory/4196-11-0x0000000000240000-0x0000000000252000-memory.dmp

Filesize
72KB

Download
memory/4196-14-0x0000000000240000-0x0000000000252000-memory.dmp

Filesize
72KB

Download
memory/4196-28-0x00000000023E0000-0x00000000023E1000-memory.dmp

Filesize
4KB

Download
memory/4196-29-0x0000000000240000-0x0000000000252000-memory.dmp

Filesize
72KB

Download
memory/4196-30-0x0000000000240000-0x0000000000252000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads