Analysis

  • max time kernel
    119s
  • max time network
    1561s
  • platform
    windows10_x64
  • resource
    win10-ja-20211014
  • submitted
    22-10-2021 14:38

General

  • Target

    Fri05a277b9a3d2.exe

  • Size

    383KB

  • MD5

    8958066e38eb4b70f922db2c23457c18

  • SHA1

    27aff4aed5d4c782e9170ba124a3a1f90d979e6a

  • SHA256

    3f3a020f63daef5ffa7c2eb9014452dfa913cc6ff977e5747e6f0c854d849358

  • SHA512

    c2b73802a4b3350290d40bf2aa3942d92239eea4f69ab13fcce84090093e13d7950e3c32d565880a9ec74b8898cb82bb63e04a53505d9ef5f3aea812f8a68236

Malware Config

Extracted

Family

redline

Botnet

media21

C2

91.121.67.60:23325

Signatures

  • RedLine

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

  • RedLine Payload 2 IoCs
  • Registers COM server for autorun 1 TTPs
  • 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.

  • Drops file in System32 directory 4 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Modifies data under HKEY_USERS 23 IoCs
  • Modifies registry class 44 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Fri05a277b9a3d2.exe
    "C:\Users\Admin\AppData\Local\Temp\Fri05a277b9a3d2.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:952
    • C:\Users\Admin\AppData\Local\Temp\Fri05a277b9a3d2.exe
      C:\Users\Admin\AppData\Local\Temp\Fri05a277b9a3d2.exe
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:764
  • C:\Users\Admin\AppData\Local\Microsoft\OneDrive\21.196.0921.0007\FileSyncConfig.exe
    "C:\Users\Admin\AppData\Local\Microsoft\OneDrive\21.196.0921.0007\FileSyncConfig.exe"
    1⤵
    • Modifies registry class
    PID:1440
  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeC2RClient.exe
    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeC2RClient.exe" /frequentupdate SCHEDULEDTASK displaylevel=False
    1⤵
    • Drops file in System32 directory
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:920

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

1
T1012

Collection

Data from Local System

2
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Fri05a277b9a3d2.exe.log
    MD5

    41fbed686f5700fc29aaccf83e8ba7fd

    SHA1

    5271bc29538f11e42a3b600c8dc727186e912456

    SHA256

    df4e9d012687cdabd15e86bf37be15d6c822e1f50dde530a02468f0006586437

    SHA512

    234b2235c1ced25810a4121c5eabcbf9f269e82c126a1adc363ee34478173f8b462e90eb53f5f11533641663350b90ec1e2360fd805b10c041fab12f4da7a034

  • memory/764-128-0x0000000005000000-0x0000000005001000-memory.dmp
    Filesize

    4KB

  • memory/764-132-0x00000000053B0000-0x00000000053B1000-memory.dmp
    Filesize

    4KB

  • memory/764-127-0x0000000004EB0000-0x0000000004EB1000-memory.dmp
    Filesize

    4KB

  • memory/764-140-0x0000000007F10000-0x0000000007F11000-memory.dmp
    Filesize

    4KB

  • memory/764-122-0x0000000000418532-mapping.dmp
  • memory/764-121-0x0000000000400000-0x000000000041E000-memory.dmp
    Filesize

    120KB

  • memory/764-125-0x0000000005420000-0x0000000005421000-memory.dmp
    Filesize

    4KB

  • memory/764-139-0x0000000007810000-0x0000000007811000-memory.dmp
    Filesize

    4KB

  • memory/764-137-0x0000000006220000-0x0000000006221000-memory.dmp
    Filesize

    4KB

  • memory/764-134-0x0000000005DD0000-0x0000000005DD1000-memory.dmp
    Filesize

    4KB

  • memory/764-130-0x0000000004E10000-0x0000000005416000-memory.dmp
    Filesize

    6.0MB

  • memory/764-129-0x0000000004F30000-0x0000000004F31000-memory.dmp
    Filesize

    4KB

  • memory/764-131-0x0000000004F70000-0x0000000004F71000-memory.dmp
    Filesize

    4KB

  • memory/952-118-0x0000000001610000-0x0000000001611000-memory.dmp
    Filesize

    4KB

  • memory/952-117-0x0000000005760000-0x0000000005761000-memory.dmp
    Filesize

    4KB

  • memory/952-119-0x0000000005950000-0x0000000005951000-memory.dmp
    Filesize

    4KB

  • memory/952-126-0x0000000005CF0000-0x0000000005CF1000-memory.dmp
    Filesize

    4KB

  • memory/952-120-0x0000000005E60000-0x0000000005E61000-memory.dmp
    Filesize

    4KB

  • memory/952-115-0x0000000000EA0000-0x0000000000EA1000-memory.dmp
    Filesize

    4KB