General

  • Target
    fb7e1b897266a5ce65e6dc6a2aa4371ac0075e9f372c57152c0fbbb53885920b.bin
  • Size 19.2MB
  • Sample251104-ssc31avkdl
  • SHA256 fb7e1b897266a5ce65e6dc6a2aa4371ac0075e9f372c57152c0fbbb53885920b
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • hijackloader

Attributes
  • directory

    %APPDATA%\RstMwServ

  • inject_dll

    %windir%\SysWOW64\rasapi32.dll

xor.hex

Targets

    • Target
      SQLite.Interop.dll
    • Size 1.5MB
    • SHA256 2635857df1a52f404bdfef0df36b7b60087d3cd2fba6517b856dbf7916a44fa7
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      Setup.exe
    • Size 10.9MB
    • SHA256 84cd6aeb169a487200f6cba68f2e1b495b82001b3c7eba5fe5e055809c2963e4
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    • ACR stealer,GrMsk

      ACR stealer (aka GrMsk stealer) is an infostealer written in C++.

    • Acrstealer family

    • Detects unpacked ACRstealer payload

    • Suspicious use of SetThreadContext

    • Target
      VCRUNTIME140.dll
    • Size 99KB
    • SHA256 5e197a086b6a7711baa09afe4ea7c68f0e777b2ff33f1df25a21f375b7d9693a
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      python310.dll
    • Size 4.7MB
    • SHA256 ffd61c0ef55bb2d3dbbd8c91c20cf66fb658369d582e1d08faf57d3d8bb9ec51
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      updater/AISuite3.exe
    • Size 2.1MB
    • SHA256 9b878b7e8e9c6fcdcb0110bdb5f278787829f04a43ee5930d367cf86d571aa27
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10
    • Target
      updater/AsRoutineController.exe
    • Size 2.8MB
    • SHA256 96790563caf394d18dbd583a7e27d6d85bf4caafd588045923339bdcfcae6b1e
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10
    • Target
      updater/MiscTool.exe
    • Size 997KB
    • SHA256 5e453043fd7e3d92e0af7bec7e9d304dfc8c501cc19ffd783bd6a2a4bdded1da
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10
    • Target
      updater/NvStWiz.prx
    • Size 432KB
    • SHA256 c2ad5bd189df04b39be18dec5cd251cf79b066010706ad26d99df7e49fd07762
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10
    • Target
      updater/RegSchdTask.exe
    • Size 792KB
    • SHA256 0a9b90b106941b712d4a417ecb962c8ee0b2d91caa7b5e609ab95dace7f2127b
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10
    • Target
      updater/Splash.exe
    • Size 1.1MB
    • SHA256 cc5310ce45a6234c8e005a312977bc94c158e9bb8df99a9495db4220ca9bef61
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10
    • Target
      x64/trading_api64.dll
    • Size 282KB
    • SHA256 f1eb582e607a1e43cdb1654bfb7cb29ad46f6728b3fb89a14f7727e0e8daab69
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      x64/tradingnetworkingsockets.dll
    • Size 4.1MB
    • SHA256 fc4a65ff603bf1f4bfe323de1866145ae1e006aa656799fd134dfa63d92d47c1
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      x86/api-ms-win-core-processthreads-l1-1-1.dll
    • Size 17KB
    • SHA256 e5ea2c21fb225090f7d0db6c6990d67b1558d8e834e86513bc8ba7a43c4e7b36
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      x86/api-ms-win-core-profile-l1-1-0.dll
    • Size 16KB
    • SHA256 d00a0edace14715bf79dbd17b715d8a74a2300f0adb1f3fc137edfb7074c9b0a
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      x86/api-ms-win-core-rtlsupport-l1-1-0.dll
    • Size 17KB
    • SHA256 d11093fdc1d5c9213b9b2886ce91db3ded17ef8dae1615a8c7ffbc55b8e3f79b
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      x86/api-ms-win-core-string-l1-1-0.dll
    • Size 17KB
    • SHA256 3807db7acf1b40c797e4d4c14a12c3806346ae56b25e205e600be3e635c18d4f
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      x86/api-ms-win-core-synch-l1-1-0.dll
    • Size 19KB
    • SHA256 8bb38a7a59fbaa792b3d5f34f94580429588c8c592929cbd307afd5579762abc
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      x86/api-ms-win-core-synch-l1-2-0.dll
    • Size 17KB
    • SHA256 9ac63682e03d55a5d18405d336634af080dd0003b565d12a39d6d71aaa989f48
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      x86/api-ms-win-core-sysinfo-l1-1-0.dll
    • Size 18KB
    • SHA256 1fe918979f1653d63bb713d4716910d192cd09f50017a6ecb4ce026ed6285df9
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      x86/api-ms-win-core-timezone-l1-1-0.dll
    • Size 17KB
    • SHA256 a108a8f20ded00e742a1f818ef00eb425990b6b24a2bcd060dea4d7f06d3f165
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10

MITRE ATT&CK Enterprise v16

Tasks

static1

pyinstallerhijackloader
Score
10/10

behavioral1

Score
1/10

behavioral2

Score
1/10

behavioral3

acrstealerstealer
Score
10/10

behavioral4

acrstealerstealer
Score
10/10

behavioral5

Score
1/10

behavioral6

Score
1/10

behavioral7

Score
1/10

behavioral8

Score
1/10

behavioral9

discovery
Score
3/10

behavioral10

discovery
Score
3/10

behavioral11

discovery
Score
3/10

behavioral12

discovery
Score
3/10

behavioral13

discovery
Score
3/10

behavioral14

discovery
Score
3/10

behavioral15

discovery
Score
3/10

behavioral16

discovery
Score
3/10

behavioral17

discovery
Score
3/10

behavioral18

discovery
Score
3/10

behavioral19

discovery
Score
3/10

behavioral20

discovery
Score
3/10

behavioral21

Score
1/10

behavioral22

Score
1/10

behavioral23

Score
1/10

behavioral24

Score
1/10

behavioral25

Score
1/10

behavioral26

Score
1/10

behavioral27

Score
1/10

behavioral28

Score
1/10

behavioral29

Score
1/10

behavioral30

Score
1/10

behavioral31

Score
1/10

behavioral32

Score
1/10