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Analysis

  • max time kernel
    78s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/03/2023, 18:02

General

  • Target

    tmp.exe

  • Size

    97KB

  • MD5

    95e03ae51a6671e98b8461dc1ad766eb

  • SHA1

    3968a825dbda1b2998f89018c163a5e16fbdc3f3

  • SHA256

    23f70436d5d45e4abfd9763a73a43637a51192bb1ad95df790b6ebb3dd4060d1

  • SHA512

    bd12655eb446251a76ddf49a68efadaa30f13cf905323dac0992a652679e745cad881e72df95b63c26b833cf2c5a7c51f8aa10da90291843a24a9b4180e4da26

  • SSDEEP

    1536:fEzhNlLbVUKs23ZS0M5Gw/B4dIR/2rS4eCurntMJI8MY4:8z5LbVUz2RM5GfrS4eC6teIHB

Malware Config

Extracted

Family

redline

Botnet

MIX-3

C2

167.235.133.96:43849

Attributes
  • auth_value

    5809bfc38a41ac4369f75ca7762ad9c9

Signatures

  • RedLine

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2180
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMwA1AA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1580
    • C:\Users\Admin\AppData\Local\Temp\tmp.exe
      C:\Users\Admin\AppData\Local\Temp\tmp.exe
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3388

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\tmp.exe.log

    Filesize

    1KB

    MD5

    3a9188331a78f1dbce606db64b841fcb

    SHA1

    8e2c99b7c477d06591a856a4ea3e1e214719eee8

    SHA256

    db4137e258a0f6159fda559a5f6dd2704be0582c3f0586f65040c7ad1eb68451

    SHA512

    d1a994610a045d89d5d306866c24ae56bf16555414b8f63f632552568e67b5586f26d5a17a1f0a55ada376730298e6d856e9161828d4eae9decfa4e015e0e90a

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ey35nn13.d4j.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/1580-144-0x0000000005C20000-0x0000000005C86000-memory.dmp

    Filesize

    408KB

  • memory/1580-136-0x0000000002C40000-0x0000000002C76000-memory.dmp

    Filesize

    216KB

  • memory/1580-137-0x0000000005480000-0x0000000005AA8000-memory.dmp

    Filesize

    6.2MB

  • memory/1580-138-0x0000000005380000-0x00000000053E6000-memory.dmp

    Filesize

    408KB

  • memory/1580-156-0x0000000004E40000-0x0000000004E50000-memory.dmp

    Filesize

    64KB

  • memory/1580-158-0x0000000004E40000-0x0000000004E50000-memory.dmp

    Filesize

    64KB

  • memory/1580-149-0x0000000004E40000-0x0000000004E50000-memory.dmp

    Filesize

    64KB

  • memory/1580-150-0x0000000004E40000-0x0000000004E50000-memory.dmp

    Filesize

    64KB

  • memory/1580-151-0x0000000006220000-0x000000000623E000-memory.dmp

    Filesize

    120KB

  • memory/1580-152-0x0000000007850000-0x0000000007ECA000-memory.dmp

    Filesize

    6.5MB

  • memory/1580-153-0x0000000006710000-0x000000000672A000-memory.dmp

    Filesize

    104KB

  • memory/1580-154-0x0000000004E40000-0x0000000004E50000-memory.dmp

    Filesize

    64KB

  • memory/1580-157-0x0000000004E40000-0x0000000004E50000-memory.dmp

    Filesize

    64KB

  • memory/2180-155-0x0000000004E20000-0x0000000004E30000-memory.dmp

    Filesize

    64KB

  • memory/2180-134-0x0000000004E20000-0x0000000004E30000-memory.dmp

    Filesize

    64KB

  • memory/2180-135-0x0000000006210000-0x0000000006232000-memory.dmp

    Filesize

    136KB

  • memory/2180-133-0x0000000000350000-0x000000000036E000-memory.dmp

    Filesize

    120KB

  • memory/3388-167-0x00000000056F0000-0x0000000005702000-memory.dmp

    Filesize

    72KB

  • memory/3388-165-0x0000000005C40000-0x0000000006258000-memory.dmp

    Filesize

    6.1MB

  • memory/3388-166-0x00000000057C0000-0x00000000058CA000-memory.dmp

    Filesize

    1.0MB

  • memory/3388-162-0x0000000000400000-0x0000000000432000-memory.dmp

    Filesize

    200KB

  • memory/3388-168-0x00000000058D0000-0x000000000590C000-memory.dmp

    Filesize

    240KB

  • memory/3388-169-0x0000000005740000-0x0000000005750000-memory.dmp

    Filesize

    64KB

  • memory/3388-170-0x0000000006810000-0x0000000006DB4000-memory.dmp

    Filesize

    5.6MB

  • memory/3388-171-0x0000000005AC0000-0x0000000005B52000-memory.dmp

    Filesize

    584KB

  • memory/3388-172-0x0000000006F90000-0x0000000007152000-memory.dmp

    Filesize

    1.8MB

  • memory/3388-173-0x0000000007690000-0x0000000007BBC000-memory.dmp

    Filesize

    5.2MB

  • memory/3388-174-0x0000000005740000-0x0000000005750000-memory.dmp

    Filesize

    64KB