mylobot | d50f7ead9e1d87a6b2f0812996bc8e4e9b1524b35324b75eeba9616cfc782b91

Analysis

max time kernel
150s
max time network
148s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20250314-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250314-enlocale:en-usos:windows10-ltsc_2021-x64system
submitted
27/03/2025, 14:49

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General

Target

rid.gif.exe
Size

367KB
MD5

871e489e879885db39c583b5cd90bc30
SHA1

19897738a379bfce7f1a19be11885f2334acadd8
SHA256

d50f7ead9e1d87a6b2f0812996bc8e4e9b1524b35324b75eeba9616cfc782b91
SHA512

b3a965841b33c55f0ab6d41a459eeeb66a29fd3b114bc82ccf953d0c459858755c97970152e346e794c2674a9cf9bd219014ecf344f3ce4ee2cfe9a2c4572fd3
SSDEEP

6144:aPeWTE1rkt826L4xd1EiftWt6empEVZlVISrt5AuK+FqktodbFQy+:aPbTE1rkt826L4xd1EiEt6empQ+uK+U8

Score

10^/10

mylobot botnet discovery persistence

Malware Config

Extracted

Family

mylobot

onthestage.ru:6521

krebson.ru:4685

stanislasarnoud.ru:5739

Signatures

Mylobot
Botnet which first appeared in 2017 written in C++.
botnet mylobot
Mylobot family
mylobot

Executes dropped EXE 4 IoCs

pid	Process
396	ucpuycud.exe
2272	ucpuycud.exe
1232	ucpuycud.exe
1356	ucpuycud.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-1-5-21-3174447216-2582055397-1659630574-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\huswu = "C:\\Users\\Admin\\AppData\\Roaming\\rtuppues\\ucpuycud.exe"	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3312 set thread context of 3524	3312	rid.gif.exe	85
PID 396 set thread context of 2272	396	ucpuycud.exe	88
PID 1232 set thread context of 1356	1232	ucpuycud.exe	97

System Location Discovery: System Language Discovery 1 TTPs 7 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	ucpuycud.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ucpuycud.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ucpuycud.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rid.gif.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rid.gif.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3080	cmd.exe
3080	cmd.exe

Suspicious use of WriteProcessMemory 50 IoCs

description	pid	Process	procid_target
PID 3312 wrote to memory of 3524	3312	rid.gif.exe	85
PID 3312 wrote to memory of 3524	3312	rid.gif.exe	85
PID 3312 wrote to memory of 3524	3312	rid.gif.exe	85
PID 3312 wrote to memory of 3524	3312	rid.gif.exe	85
PID 3312 wrote to memory of 3524	3312	rid.gif.exe	85
PID 3312 wrote to memory of 3524	3312	rid.gif.exe	85
PID 3312 wrote to memory of 3524	3312	rid.gif.exe	85
PID 3312 wrote to memory of 3524	3312	rid.gif.exe	85
PID 3312 wrote to memory of 3524	3312	rid.gif.exe	85
PID 3312 wrote to memory of 3524	3312	rid.gif.exe	85
PID 3524 wrote to memory of 396	3524	rid.gif.exe	86
PID 3524 wrote to memory of 396	3524	rid.gif.exe	86
PID 3524 wrote to memory of 396	3524	rid.gif.exe	86
PID 396 wrote to memory of 2272	396	ucpuycud.exe	88
PID 396 wrote to memory of 2272	396	ucpuycud.exe	88
PID 396 wrote to memory of 2272	396	ucpuycud.exe	88
PID 396 wrote to memory of 2272	396	ucpuycud.exe	88
PID 396 wrote to memory of 2272	396	ucpuycud.exe	88
PID 396 wrote to memory of 2272	396	ucpuycud.exe	88
PID 396 wrote to memory of 2272	396	ucpuycud.exe	88
PID 396 wrote to memory of 2272	396	ucpuycud.exe	88
PID 396 wrote to memory of 2272	396	ucpuycud.exe	88
PID 396 wrote to memory of 2272	396	ucpuycud.exe	88
PID 2272 wrote to memory of 3080	2272	ucpuycud.exe	89
PID 2272 wrote to memory of 3080	2272	ucpuycud.exe	89
PID 2272 wrote to memory of 3080	2272	ucpuycud.exe	89
PID 2272 wrote to memory of 3080	2272	ucpuycud.exe	89
PID 2272 wrote to memory of 3080	2272	ucpuycud.exe	89
PID 2272 wrote to memory of 3080	2272	ucpuycud.exe	89
PID 2272 wrote to memory of 3080	2272	ucpuycud.exe	89
PID 3080 wrote to memory of 1760	3080	cmd.exe	91
PID 3080 wrote to memory of 1760	3080	cmd.exe	91
PID 3080 wrote to memory of 1760	3080	cmd.exe	91
PID 3080 wrote to memory of 1760	3080	cmd.exe	91
PID 4356 wrote to memory of 1232	4356	cmd.exe	94
PID 4356 wrote to memory of 1232	4356	cmd.exe	94
PID 4356 wrote to memory of 1232	4356	cmd.exe	94
PID 3080 wrote to memory of 1760	3080	cmd.exe	91
PID 3080 wrote to memory of 1760	3080	cmd.exe	91
PID 3080 wrote to memory of 1760	3080	cmd.exe	91
PID 1232 wrote to memory of 1356	1232	ucpuycud.exe	97
PID 1232 wrote to memory of 1356	1232	ucpuycud.exe	97
PID 1232 wrote to memory of 1356	1232	ucpuycud.exe	97
PID 1232 wrote to memory of 1356	1232	ucpuycud.exe	97
PID 1232 wrote to memory of 1356	1232	ucpuycud.exe	97
PID 1232 wrote to memory of 1356	1232	ucpuycud.exe	97
PID 1232 wrote to memory of 1356	1232	ucpuycud.exe	97
PID 1232 wrote to memory of 1356	1232	ucpuycud.exe	97
PID 1232 wrote to memory of 1356	1232	ucpuycud.exe	97
PID 1232 wrote to memory of 1356	1232	ucpuycud.exe	97

C:\Users\Admin\AppData\Local\Temp\rid.gif.exe
"C:\Users\Admin\AppData\Local\Temp\rid.gif.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3312
- C:\Users\Admin\AppData\Local\Temp\rid.gif.exe
  "C:\Users\Admin\AppData\Local\Temp\rid.gif.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3524
- - C:\Users\Admin\AppData\Roaming\rtuppues\ucpuycud.exe
    "C:\Users\Admin\AppData\Roaming\rtuppues\ucpuycud.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:396
  - - C:\Users\Admin\AppData\Roaming\rtuppues\ucpuycud.exe
      "C:\Users\Admin\AppData\Roaming\rtuppues\ucpuycud.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2272
    - - C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\system32\cmd.exe"
        5⤵
        Adds Run key to start application
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of WriteProcessMemory
        
        PID:3080
      - C:\Windows\SysWOW64\notepad.exe
        
        "C:\Windows\system32\notepad.exe"
        6⤵
        System Location Discovery: System Language Discovery
        
        PID:1760

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\rtuppues\ucpuycud.exe
1⤵
- Suspicious use of WriteProcessMemory
PID:4356
- C:\Users\Admin\AppData\Roaming\rtuppues\ucpuycud.exe
  C:\Users\Admin\AppData\Roaming\rtuppues\ucpuycud.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1232
- - C:\Users\Admin\AppData\Roaming\rtuppues\ucpuycud.exe
    C:\Users\Admin\AppData\Roaming\rtuppues\ucpuycud.exe
    3⤵
    - Executes dropped EXE
    PID:1356

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\rtuppues\ucpuycud.exe

Filesize
367KB

MD5
871e489e879885db39c583b5cd90bc30

SHA1
19897738a379bfce7f1a19be11885f2334acadd8

SHA256
d50f7ead9e1d87a6b2f0812996bc8e4e9b1524b35324b75eeba9616cfc782b91

SHA512
b3a965841b33c55f0ab6d41a459eeeb66a29fd3b114bc82ccf953d0c459858755c97970152e346e794c2674a9cf9bd219014ecf344f3ce4ee2cfe9a2c4572fd3

Download Submit
memory/396-38-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/396-13-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/1760-51-0x00000000001F0000-0x00000000001F1000-memory.dmp

Filesize
4KB

Download
memory/1760-52-0x00000000045E0000-0x00000000045EB000-memory.dmp

Filesize
44KB

Download
memory/1760-47-0x0000000004550000-0x0000000004551000-memory.dmp

Filesize
4KB

Download
memory/2272-18-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/3080-21-0x0000000001030000-0x0000000001038000-memory.dmp

Filesize
32KB

Download
memory/3080-34-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3080-19-0x0000000000B20000-0x0000000000B21000-memory.dmp

Filesize
4KB

Download
memory/3080-24-0x0000000001050000-0x0000000001051000-memory.dmp

Filesize
4KB

Download
memory/3080-22-0x0000000001030000-0x0000000001038000-memory.dmp

Filesize
32KB

Download
memory/3080-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3080-29-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3080-28-0x0000000000B20000-0x0000000000B21000-memory.dmp

Filesize
4KB

Download
memory/3080-32-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3080-36-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3080-58-0x0000000000B20000-0x0000000000B21000-memory.dmp

Filesize
4KB

Download
memory/3080-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3080-35-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3080-20-0x0000000000B20000-0x0000000000B21000-memory.dmp

Filesize
4KB

Download
memory/3312-0-0x00000000005E0000-0x00000000005E1000-memory.dmp

Filesize
4KB

Download
memory/3524-4-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/3524-3-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/3524-1-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/3524-5-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download