Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-07-2023 02:03

General

  • Target

    b4d092bdd58610ec77ef6713fe7559c39a52f77d37f8a3c5044e1b95e98f969e.exe

  • Size

    267KB

  • MD5

    8c9c29e59baf663d0b071b9efdec3bea

  • SHA1

    dbb8afc9bab40bf175322840b01d474303c38daf

  • SHA256

    b4d092bdd58610ec77ef6713fe7559c39a52f77d37f8a3c5044e1b95e98f969e

  • SHA512

    5dcdb29f21c758af40c65b96e2ae2bfa3a24388fb1c924118e258b90af2ed59b676122229de424c2c26f5050e643e4a8b3add3eaa5df6c4ba361b115cecbefd3

  • SSDEEP

    6144:EJZKBI0RyYeY4eoiJ+sCFvTK2/LZZ3Ru79kkkkkkkkkkkkkkkkskkkkkkkkkkkkq:1yYrZos+xFv5RupkkkkkkkkkkkkkkkkZ

Malware Config

Signatures

  • VanillaRat

    VanillaRat is an advanced remote administration tool coded in C#.

  • Vanilla Rat payload 7 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b4d092bdd58610ec77ef6713fe7559c39a52f77d37f8a3c5044e1b95e98f969e.exe
    "C:\Users\Admin\AppData\Local\Temp\b4d092bdd58610ec77ef6713fe7559c39a52f77d37f8a3c5044e1b95e98f969e.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4680
    • C:\Users\Admin\svchost.exe
      "C:\Users\Admin\svchost.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4932
      • C:\Users\Admin\AppData\Roaming\svchost.exe
        "C:\Users\Admin\AppData\Roaming\svchost.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        PID:4676

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Command and Control

Web Service

1
T1102

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\svchost.exe
    Filesize

    115KB

    MD5

    2e5422412d23d9f1c1dff78719447728

    SHA1

    00440171a8963d4454aa8e63fb3a25fd85585091

    SHA256

    3f0ce66700b7011c8fa2e8a1709c43fb79882721afa0f5e1bbeb8a5c29d81d03

    SHA512

    77b31e4a05b73495b4ca8698b046bef8cdec82845d316b304679b2521529be38d1dd0cd4e471cf04097ce734f588312214687ec0c8582a5ff5676b68b4e61521

  • C:\Users\Admin\AppData\Roaming\svchost.exe
    Filesize

    115KB

    MD5

    2e5422412d23d9f1c1dff78719447728

    SHA1

    00440171a8963d4454aa8e63fb3a25fd85585091

    SHA256

    3f0ce66700b7011c8fa2e8a1709c43fb79882721afa0f5e1bbeb8a5c29d81d03

    SHA512

    77b31e4a05b73495b4ca8698b046bef8cdec82845d316b304679b2521529be38d1dd0cd4e471cf04097ce734f588312214687ec0c8582a5ff5676b68b4e61521

  • C:\Users\Admin\svchost.exe
    Filesize

    115KB

    MD5

    2e5422412d23d9f1c1dff78719447728

    SHA1

    00440171a8963d4454aa8e63fb3a25fd85585091

    SHA256

    3f0ce66700b7011c8fa2e8a1709c43fb79882721afa0f5e1bbeb8a5c29d81d03

    SHA512

    77b31e4a05b73495b4ca8698b046bef8cdec82845d316b304679b2521529be38d1dd0cd4e471cf04097ce734f588312214687ec0c8582a5ff5676b68b4e61521

  • C:\Users\Admin\svchost.exe
    Filesize

    115KB

    MD5

    2e5422412d23d9f1c1dff78719447728

    SHA1

    00440171a8963d4454aa8e63fb3a25fd85585091

    SHA256

    3f0ce66700b7011c8fa2e8a1709c43fb79882721afa0f5e1bbeb8a5c29d81d03

    SHA512

    77b31e4a05b73495b4ca8698b046bef8cdec82845d316b304679b2521529be38d1dd0cd4e471cf04097ce734f588312214687ec0c8582a5ff5676b68b4e61521

  • C:\Users\Admin\svchost.exe
    Filesize

    115KB

    MD5

    2e5422412d23d9f1c1dff78719447728

    SHA1

    00440171a8963d4454aa8e63fb3a25fd85585091

    SHA256

    3f0ce66700b7011c8fa2e8a1709c43fb79882721afa0f5e1bbeb8a5c29d81d03

    SHA512

    77b31e4a05b73495b4ca8698b046bef8cdec82845d316b304679b2521529be38d1dd0cd4e471cf04097ce734f588312214687ec0c8582a5ff5676b68b4e61521

  • memory/4676-185-0x0000000074D60000-0x0000000075510000-memory.dmp
    Filesize

    7.7MB

  • memory/4676-186-0x0000000074D60000-0x0000000075510000-memory.dmp
    Filesize

    7.7MB

  • memory/4680-133-0x0000000074D60000-0x0000000075510000-memory.dmp
    Filesize

    7.7MB

  • memory/4680-170-0x0000000074D60000-0x0000000075510000-memory.dmp
    Filesize

    7.7MB

  • memory/4680-135-0x0000000005360000-0x00000000053FC000-memory.dmp
    Filesize

    624KB

  • memory/4680-134-0x0000000000970000-0x00000000009BA000-memory.dmp
    Filesize

    296KB

  • memory/4932-166-0x0000000000720000-0x0000000000742000-memory.dmp
    Filesize

    136KB

  • memory/4932-168-0x0000000074D60000-0x0000000075510000-memory.dmp
    Filesize

    7.7MB

  • memory/4932-169-0x0000000005BD0000-0x0000000006174000-memory.dmp
    Filesize

    5.6MB

  • memory/4932-171-0x0000000005720000-0x00000000057B2000-memory.dmp
    Filesize

    584KB

  • memory/4932-172-0x00000000057E0000-0x00000000057EA000-memory.dmp
    Filesize

    40KB

  • memory/4932-184-0x0000000074D60000-0x0000000075510000-memory.dmp
    Filesize

    7.7MB