14dc380896e6d3631ced48498b0d552c9b0585764fdd666bf26bb7d8fca15eaf

General

Target

steamerrorreporter.exe
Size

560KB
MD5

dc1681b98049f1df46dd10d7f4c26045
SHA1

4c7f5cf7c00b6139979f8aa41f46979666369224
SHA256

594f9853124e0a81deeaaecb8ec3d192169e7393778214ef6d8f6460450ef080
SHA512

c9a2086326acbab8aba801da0d8bd2aa06951ec7fd7f32a3150f9521498c0b6711552695fbf9d0de7668503630c508bcd68e1d715796ef34f9945035da3fe1ed
SSDEEP

6144:mOzBfFojwX0v4KU9DJZ10Bwr/RvTuZjOULXAO99cER0u+GIIIIIIIhIIIIIIIIIZ:mONFX0v4KU9DJZ16wr/MHVm5a0dw/D

Score

5^/10

discovery

Malware Config

Signatures

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2116 set thread context of 2836	2116	steamerrorreporter.exe	30

Executes dropped EXE 1 IoCs

pid	Process
2116	steamerrorreporter.exe

Loads dropped DLL 4 IoCs

pid	Process
432	steamerrorreporter.exe
2116	steamerrorreporter.exe
2116	steamerrorreporter.exe
2836	cmd.exe

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
1788	1644	WerFault.exe	32

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	steamerrorreporter.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	steamerrorreporter.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
432	steamerrorreporter.exe
2116	steamerrorreporter.exe
2116	steamerrorreporter.exe
2836	cmd.exe
2836	cmd.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2116	steamerrorreporter.exe
2836	cmd.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 432 wrote to memory of 2116	432	steamerrorreporter.exe	29
PID 432 wrote to memory of 2116	432	steamerrorreporter.exe	29
PID 432 wrote to memory of 2116	432	steamerrorreporter.exe	29
PID 432 wrote to memory of 2116	432	steamerrorreporter.exe	29
PID 2116 wrote to memory of 2836	2116	steamerrorreporter.exe	30
PID 2116 wrote to memory of 2836	2116	steamerrorreporter.exe	30
PID 2116 wrote to memory of 2836	2116	steamerrorreporter.exe	30
PID 2116 wrote to memory of 2836	2116	steamerrorreporter.exe	30
PID 2116 wrote to memory of 2836	2116	steamerrorreporter.exe	30
PID 2836 wrote to memory of 1644	2836	cmd.exe	32
PID 2836 wrote to memory of 1644	2836	cmd.exe	32
PID 2836 wrote to memory of 1644	2836	cmd.exe	32
PID 2836 wrote to memory of 1644	2836	cmd.exe	32
PID 2836 wrote to memory of 1644	2836	cmd.exe	32
PID 2836 wrote to memory of 1644	2836	cmd.exe	32
PID 1644 wrote to memory of 1788	1644	explorer.exe	33
PID 1644 wrote to memory of 1788	1644	explorer.exe	33
PID 1644 wrote to memory of 1788	1644	explorer.exe	33
PID 1644 wrote to memory of 1788	1644	explorer.exe	33

C:\Users\Admin\AppData\Local\Temp\steamerrorreporter.exe
"C:\Users\Admin\AppData\Local\Temp\steamerrorreporter.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:432
- C:\Users\Admin\AppData\Roaming\Notepadsystem_v5\steamerrorreporter.exe
  C:\Users\Admin\AppData\Roaming\Notepadsystem_v5\steamerrorreporter.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2116
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\SysWOW64\cmd.exe
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:2836
  - - C:\Windows\SysWOW64\explorer.exe
      C:\Windows\SysWOW64\explorer.exe
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:1644
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1644 -s 36
        5⤵
        Program crash
        
        PID:1788

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\2acd7f37

Filesize
8.0MB

MD5
8d8194c1b28429d1b94ef9732bb937ea

SHA1
e935ae1fa274fa52cf00574213b1a0af7cfe122d

SHA256
e308a9cb7e918d5f7f096bf213900ec37eb3604e0a6ce8d575b317de8b6ce2b5

SHA512
ad751a0f5a9d7e4f09da8c6a3f8756f5b5582a1275a502ebdf4c1c83ec77eccdd92ee0dad27755da8fbe7bdd1edb641df2e30638d2e97b929376ad84436e7ef2

Download Submit
C:\Users\Admin\AppData\Roaming\Notepadsystem_v5\aesc.mov

Filesize
38KB

MD5
ba1411d5b561b92adefa48aaca564e47

SHA1
05f4abb6396388f904efeb6ae4c647ee6e701483

SHA256
5091d9b372b2dd4550cf2b14be4372792509b5c606449e73d487213d6e7402bf

SHA512
437db6fbb612369be7423f6e8c6ab0ba543cc6d3dcc5fd33e5aa26808bf5abfbb5eec12f1af2b8c5b5aca5ba8560fe441eb43270e1acc740ba03e9ef52d36aa6

Download Submit
C:\Users\Admin\AppData\Roaming\Notepadsystem_v5\curette.ics

Filesize
7.4MB

MD5
fd1b3017c49f0b6f896e135f8061fe5c

SHA1
1719528119548a352ebd7e44363ed7c93588e04b

SHA256
6af0a5dde52cff22980decdc050520213af54b88e9985b501d37fc821ac4ce7c

SHA512
f1f769947fea5111a93c4e456decabae343d209b3e99ff1ca9e261e9e8cf4c1682b9e0f80f3de4cd4d4e5c75f171e98298f7afdf89ece4ce5ac76b040dacc7b5

Download Submit
C:\Users\Admin\AppData\Roaming\Notepadsystem_v5\tier0_s.dll

Filesize
341KB

MD5
884013332bf332e4dd8cbf0109a8cfeb

SHA1
c01789d661d465ca29d20174d8f5d29afb1fcffa

SHA256
8ed104f6d7a50f95d515005bf6bd5569cd2dc0107119aa3d91e21dd7ba777e98

SHA512
ea18f416b1295edcfc197c685d56030246097bf95ffffa46f13a16753d05d95a1adb83b5ba0669eaa1049856ea2486ca0fc49507df7d41572de80701e9852f64

Download Submit
C:\Users\Admin\AppData\Roaming\Notepadsystem_v5\vstdlib_s.dll

Filesize
519KB

MD5
464b80302d3e5f1a12030f2afd15e8c0

SHA1
fa4a9d98b5272f3d1110188b53264b03134f1bcd

SHA256
954ecb7e90993cf1e3d426a00512f0591a0c385d986db7b923b872289a659ed9

SHA512
03686460522be3f830142c95b86dbaa686888a1fd22dc218ef6f0a6e1b7b1f8d65444b47d909c09348c6fa003d5f000998f640524aa001d719f4381c78e004d1

Download Submit
\Users\Admin\AppData\Roaming\Notepadsystem_v5\steamerrorreporter.exe

Filesize
560KB

MD5
dc1681b98049f1df46dd10d7f4c26045

SHA1
4c7f5cf7c00b6139979f8aa41f46979666369224

SHA256
594f9853124e0a81deeaaecb8ec3d192169e7393778214ef6d8f6460450ef080

SHA512
c9a2086326acbab8aba801da0d8bd2aa06951ec7fd7f32a3150f9521498c0b6711552695fbf9d0de7668503630c508bcd68e1d715796ef34f9945035da3fe1ed

Download Submit
memory/432-1-0x00000000779B0000-0x0000000077B59000-memory.dmp

Filesize
1.7MB

Download
memory/432-0-0x0000000074F10000-0x0000000075084000-memory.dmp

Filesize
1.5MB

Download
memory/1644-80-0x0000000000990000-0x000000000111E000-memory.dmp

Filesize
7.6MB

Download
memory/1644-78-0x0000000000990000-0x000000000111E000-memory.dmp

Filesize
7.6MB

Download
memory/1644-75-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1644-76-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2116-19-0x0000000074DA3000-0x0000000074DA5000-memory.dmp

Filesize
8KB

Download
memory/2116-21-0x0000000074D90000-0x0000000074F04000-memory.dmp

Filesize
1.5MB

Download
memory/2116-20-0x0000000074D90000-0x0000000074F04000-memory.dmp

Filesize
1.5MB

Download
memory/2116-18-0x00000000779B0000-0x0000000077B59000-memory.dmp

Filesize
1.7MB

Download
memory/2116-17-0x0000000074D90000-0x0000000074F04000-memory.dmp

Filesize
1.5MB

Download
memory/2836-23-0x0000000074D90000-0x0000000074F04000-memory.dmp

Filesize
1.5MB

Download
memory/2836-25-0x00000000779B0000-0x0000000077B59000-memory.dmp

Filesize
1.7MB

Download
memory/2836-73-0x0000000074D90000-0x0000000074F04000-memory.dmp

Filesize
1.5MB

Download
memory/2836-72-0x0000000074D90000-0x0000000074F04000-memory.dmp

Filesize
1.5MB

Download
memory/2836-77-0x0000000074D90000-0x0000000074F04000-memory.dmp

Filesize
1.5MB

Download

Analysis

Sharing