Analysis

  • max time kernel
    85s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    26-09-2021 15:01

General

  • Target

    E945.exe

  • Size

    780KB

  • MD5

    b2d8e3fc81ee69664d1221439ffd9ee8

  • SHA1

    c325fe65f692c8ee023f12f41cbb0663d658b917

  • SHA256

    2532854386c2ac90a742a4cb593fa2502f261ff2909444de7415ea175285b89b

  • SHA512

    d31b225f989b75c02e09660aa5ec70e6a92b901567c823b38a726ed9735d60df755fbd9f80fb12a34e835253707a3ba8e0318f233b54794e55b79f785287976f

Malware Config

Extracted

Family

redline

Botnet

karma

C2

94.103.9.133:39323

Extracted

Family

redline

Botnet

Bliss

C2

185.237.98.178:62607

Signatures

  • Generic Chinese Botnet

    A botnet originating from China which is currently unnamed publicly.

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine Payload 4 IoCs
  • Chinese Botnet Payload 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 49 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\E945.exe
    "C:\Users\Admin\AppData\Local\Temp\E945.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:856
    • C:\Users\Admin\AppData\Local\Temp\SindonsWelfare_2021-09-26_15-02.exe
      "C:\Users\Admin\AppData\Local\Temp\SindonsWelfare_2021-09-26_15-02.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:804
    • C:\Users\Admin\AppData\Local\Temp\SolanumsYoghurt_2021-09-26_14-52.exe
      "C:\Users\Admin\AppData\Local\Temp\SolanumsYoghurt_2021-09-26_14-52.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1612
    • C:\Users\Admin\AppData\Local\Temp\fbf.exe
      "C:\Users\Admin\AppData\Local\Temp\fbf.exe"
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in Program Files directory
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:972
  • C:\Program Files (x86)\Microsoft Ouigga\Uuuocai.exe
    "C:\Program Files (x86)\Microsoft Ouigga\Uuuocai.exe"
    1⤵
    • Executes dropped EXE
    • Drops file in System32 directory
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1380
    • C:\Program Files (x86)\Microsoft Ouigga\Uuuocai.exe
      "C:\Program Files (x86)\Microsoft Ouigga\Uuuocai.exe" Win7
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:1768

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

3
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

3
T1082

Collection

Data from Local System

2
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files (x86)\Microsoft Ouigga\Uuuocai.exe
    MD5

    fbf3187db919beaddb30ae7e52bd9a49

    SHA1

    d2891928551f2adff238547c7cae4e3fef7cc057

    SHA256

    a83b8dfadf92be244ccc6b2964eea2f67e0c807befa3ab969a68ee321be583dd

    SHA512

    1d609711a21609d3bc3df80d3616ef388f32e0adcb9af865bfa3aeb9c61f81e099e5591cdecbe5412a4ea18ef236043c977faad4245ae45fd58eeb15119715ab

  • C:\Program Files (x86)\Microsoft Ouigga\Uuuocai.exe
    MD5

    fbf3187db919beaddb30ae7e52bd9a49

    SHA1

    d2891928551f2adff238547c7cae4e3fef7cc057

    SHA256

    a83b8dfadf92be244ccc6b2964eea2f67e0c807befa3ab969a68ee321be583dd

    SHA512

    1d609711a21609d3bc3df80d3616ef388f32e0adcb9af865bfa3aeb9c61f81e099e5591cdecbe5412a4ea18ef236043c977faad4245ae45fd58eeb15119715ab

  • C:\Program Files (x86)\Microsoft Ouigga\Uuuocai.exe
    MD5

    fbf3187db919beaddb30ae7e52bd9a49

    SHA1

    d2891928551f2adff238547c7cae4e3fef7cc057

    SHA256

    a83b8dfadf92be244ccc6b2964eea2f67e0c807befa3ab969a68ee321be583dd

    SHA512

    1d609711a21609d3bc3df80d3616ef388f32e0adcb9af865bfa3aeb9c61f81e099e5591cdecbe5412a4ea18ef236043c977faad4245ae45fd58eeb15119715ab

  • C:\Users\Admin\AppData\Local\Temp\SindonsWelfare_2021-09-26_15-02.exe
    MD5

    85ea0a07196273bbe4f6c62a03a2f203

    SHA1

    cdd0dffd5d27e3ad577ae8b9d2bb96f6f5dfe04e

    SHA256

    6cb9da1cb79c8725942119d20eceb769f64513380285b8729310ba025f0c4843

    SHA512

    a5f0ce32164d00b13c6d9a88686c4db835366b68260b6e2ce16ad00b44f7c435c4e034d753c9774a7e237f3b02cf16d2983c56b1bc6925baa6d1902b67a2fe80

  • C:\Users\Admin\AppData\Local\Temp\SolanumsYoghurt_2021-09-26_14-52.exe
    MD5

    105284f4061d970957c38814ed96eec6

    SHA1

    a6a0adb7f986be857be7520da0b498c975b0d845

    SHA256

    5709a8b2658fa9ccf9137f164dae6094d997c0cc42e87cb84f9e6e86087b07ef

    SHA512

    771e64a374320d57f0b0f98272dd3dc657546494bb881efa5984ce4e0cf14c2f9b1aef8a1e269099c80dc9705d5af9f457519d2231150305206848a7d52658a7

  • C:\Users\Admin\AppData\Local\Temp\fbf.exe
    MD5

    fbf3187db919beaddb30ae7e52bd9a49

    SHA1

    d2891928551f2adff238547c7cae4e3fef7cc057

    SHA256

    a83b8dfadf92be244ccc6b2964eea2f67e0c807befa3ab969a68ee321be583dd

    SHA512

    1d609711a21609d3bc3df80d3616ef388f32e0adcb9af865bfa3aeb9c61f81e099e5591cdecbe5412a4ea18ef236043c977faad4245ae45fd58eeb15119715ab

  • C:\Users\Admin\AppData\Local\Temp\fbf.exe
    MD5

    fbf3187db919beaddb30ae7e52bd9a49

    SHA1

    d2891928551f2adff238547c7cae4e3fef7cc057

    SHA256

    a83b8dfadf92be244ccc6b2964eea2f67e0c807befa3ab969a68ee321be583dd

    SHA512

    1d609711a21609d3bc3df80d3616ef388f32e0adcb9af865bfa3aeb9c61f81e099e5591cdecbe5412a4ea18ef236043c977faad4245ae45fd58eeb15119715ab

  • memory/804-62-0x0000000000230000-0x0000000000260000-memory.dmp
    Filesize

    192KB

  • memory/804-63-0x0000000000400000-0x00000000004C5000-memory.dmp
    Filesize

    788KB

  • memory/804-56-0x0000000000000000-mapping.dmp
  • memory/804-65-0x0000000002080000-0x000000000209F000-memory.dmp
    Filesize

    124KB

  • memory/804-67-0x00000000020A0000-0x00000000020BE000-memory.dmp
    Filesize

    120KB

  • memory/804-72-0x00000000049B1000-0x00000000049B2000-memory.dmp
    Filesize

    4KB

  • memory/804-69-0x00000000049B4000-0x00000000049B6000-memory.dmp
    Filesize

    8KB

  • memory/804-76-0x00000000049B2000-0x00000000049B3000-memory.dmp
    Filesize

    4KB

  • memory/804-77-0x00000000049B3000-0x00000000049B4000-memory.dmp
    Filesize

    4KB

  • memory/856-54-0x0000000000C90000-0x0000000000C91000-memory.dmp
    Filesize

    4KB

  • memory/972-79-0x0000000000400000-0x00000000004C4000-memory.dmp
    Filesize

    784KB

  • memory/972-80-0x0000000074C71000-0x0000000074C73000-memory.dmp
    Filesize

    8KB

  • memory/972-74-0x0000000001E40000-0x0000000001EFC000-memory.dmp
    Filesize

    752KB

  • memory/972-60-0x0000000000000000-mapping.dmp
  • memory/972-81-0x0000000010000000-0x0000000010018000-memory.dmp
    Filesize

    96KB

  • memory/1612-68-0x00000000002D0000-0x0000000000307000-memory.dmp
    Filesize

    220KB

  • memory/1612-78-0x0000000004934000-0x0000000004936000-memory.dmp
    Filesize

    8KB

  • memory/1612-73-0x0000000004932000-0x0000000004933000-memory.dmp
    Filesize

    4KB

  • memory/1612-70-0x0000000000400000-0x00000000004CB000-memory.dmp
    Filesize

    812KB

  • memory/1612-71-0x0000000004931000-0x0000000004932000-memory.dmp
    Filesize

    4KB

  • memory/1612-66-0x00000000022A0000-0x00000000022C2000-memory.dmp
    Filesize

    136KB

  • memory/1612-64-0x0000000002270000-0x0000000002293000-memory.dmp
    Filesize

    140KB

  • memory/1612-75-0x0000000004933000-0x0000000004934000-memory.dmp
    Filesize

    4KB

  • memory/1612-58-0x0000000000000000-mapping.dmp
  • memory/1768-89-0x0000000000000000-mapping.dmp