Analysis

  • max time kernel
    150s
  • max time network
    164s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    25-10-2021 05:23

General

  • Target

    3d054e3e93c3fccafea80b7e225da90d205282662800aec4624d0641631202b8.exe

  • Size

    262KB

  • MD5

    3ba0b3a3b6d2a66d507acb1f10a24434

  • SHA1

    644a4f467c21f8693f7f3c8788360ac3df0fa525

  • SHA256

    3d054e3e93c3fccafea80b7e225da90d205282662800aec4624d0641631202b8

  • SHA512

    dafa6f2a947598d690441bc418c06bc0c78b63787f189385c2e9b8d47ce4a3ccc7ae18c70c602c4582b15205ca8478ab88cdedcb344dc1ec3f5b0c22c3badc0d

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://xacokuo8.top/

http://hajezey1.top/

rc4.i32
rc4.i32

Signatures

  • RedLine

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

  • RedLine Payload 5 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Downloads MZ/PE file
  • Executes dropped EXE 6 IoCs
  • Deletes itself 1 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.

  • Suspicious use of SetThreadContext 4 IoCs
  • Checks SCSI registry key(s) 3 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 40 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3d054e3e93c3fccafea80b7e225da90d205282662800aec4624d0641631202b8.exe
    "C:\Users\Admin\AppData\Local\Temp\3d054e3e93c3fccafea80b7e225da90d205282662800aec4624d0641631202b8.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4056
    • C:\Users\Admin\AppData\Local\Temp\3d054e3e93c3fccafea80b7e225da90d205282662800aec4624d0641631202b8.exe
      "C:\Users\Admin\AppData\Local\Temp\3d054e3e93c3fccafea80b7e225da90d205282662800aec4624d0641631202b8.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:596
  • C:\Users\Admin\AppData\Local\Temp\A285.exe
    C:\Users\Admin\AppData\Local\Temp\A285.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3260
    • C:\Users\Admin\AppData\Local\Temp\A285.exe
      C:\Users\Admin\AppData\Local\Temp\A285.exe
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:1544
  • C:\Users\Admin\AppData\Local\Temp\69F.exe
    C:\Users\Admin\AppData\Local\Temp\69F.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:932
    • C:\Users\Admin\AppData\Local\Temp\69F.exe
      C:\Users\Admin\AppData\Local\Temp\69F.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4088
  • C:\Users\Admin\AppData\Local\Temp\199C.exe
    C:\Users\Admin\AppData\Local\Temp\199C.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2072
    • C:\Users\Admin\AppData\Local\Temp\199C.exe
      C:\Users\Admin\AppData\Local\Temp\199C.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1436

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

2
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

1
T1082

Collection

Data from Local System

2
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\199C.exe.log
    MD5

    41fbed686f5700fc29aaccf83e8ba7fd

    SHA1

    5271bc29538f11e42a3b600c8dc727186e912456

    SHA256

    df4e9d012687cdabd15e86bf37be15d6c822e1f50dde530a02468f0006586437

    SHA512

    234b2235c1ced25810a4121c5eabcbf9f269e82c126a1adc363ee34478173f8b462e90eb53f5f11533641663350b90ec1e2360fd805b10c041fab12f4da7a034

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\69F.exe.log
    MD5

    605f809fab8c19729d39d075f7ffdb53

    SHA1

    c546f877c9bd53563174a90312a8337fdfc5fdd9

    SHA256

    6904d540649e76c55f99530b81be17e099184bb4cad415aa9b9b39cc3677f556

    SHA512

    82cc12c3186ae23884b8d5c104638c8206272c4389ade56b926dfc1d437b03888159b3c790b188b54d277a262e731927e703e680ea642e1417faee27443fd5b3

  • C:\Users\Admin\AppData\Local\Temp\199C.exe
    MD5

    0cafd553a0f55d525a5ec0ec6c2c06bd

    SHA1

    621e411916749c72cdc4d97f46b843bb758659c1

    SHA256

    3acca9f2af679c0cba972e71c88871397132c5f389a5beffa7710204b0c81987

    SHA512

    b56e4a59cc314ba533cb0c2d763482de28320f7f2c8eb73d9209745f61b4e22b041756d5c20775a0afab67f86eb68c1267b76b5da1baffbadc75b6ffeda3fdb9

  • C:\Users\Admin\AppData\Local\Temp\199C.exe
    MD5

    0cafd553a0f55d525a5ec0ec6c2c06bd

    SHA1

    621e411916749c72cdc4d97f46b843bb758659c1

    SHA256

    3acca9f2af679c0cba972e71c88871397132c5f389a5beffa7710204b0c81987

    SHA512

    b56e4a59cc314ba533cb0c2d763482de28320f7f2c8eb73d9209745f61b4e22b041756d5c20775a0afab67f86eb68c1267b76b5da1baffbadc75b6ffeda3fdb9

  • C:\Users\Admin\AppData\Local\Temp\199C.exe
    MD5

    0cafd553a0f55d525a5ec0ec6c2c06bd

    SHA1

    621e411916749c72cdc4d97f46b843bb758659c1

    SHA256

    3acca9f2af679c0cba972e71c88871397132c5f389a5beffa7710204b0c81987

    SHA512

    b56e4a59cc314ba533cb0c2d763482de28320f7f2c8eb73d9209745f61b4e22b041756d5c20775a0afab67f86eb68c1267b76b5da1baffbadc75b6ffeda3fdb9

  • C:\Users\Admin\AppData\Local\Temp\69F.exe
    MD5

    4ae44e9cb5a3f3d5f40d52c71bdef439

    SHA1

    06d591028442b6e18e36f9495ee53d6be6d3a273

    SHA256

    153b903cf8c24a57937304fafc9c77e1abfa650244f29a141c57d1ba391dc1e0

    SHA512

    f42ab8cb503805282a03f6ecbb90d7db65fd057c3f4f9904fa814c488aeae6aa7105ca528c8a7b20d74ebceb4149c9f16c75f07a95db5f2bccbe3b5be2f1febf

  • C:\Users\Admin\AppData\Local\Temp\69F.exe
    MD5

    4ae44e9cb5a3f3d5f40d52c71bdef439

    SHA1

    06d591028442b6e18e36f9495ee53d6be6d3a273

    SHA256

    153b903cf8c24a57937304fafc9c77e1abfa650244f29a141c57d1ba391dc1e0

    SHA512

    f42ab8cb503805282a03f6ecbb90d7db65fd057c3f4f9904fa814c488aeae6aa7105ca528c8a7b20d74ebceb4149c9f16c75f07a95db5f2bccbe3b5be2f1febf

  • C:\Users\Admin\AppData\Local\Temp\69F.exe
    MD5

    4ae44e9cb5a3f3d5f40d52c71bdef439

    SHA1

    06d591028442b6e18e36f9495ee53d6be6d3a273

    SHA256

    153b903cf8c24a57937304fafc9c77e1abfa650244f29a141c57d1ba391dc1e0

    SHA512

    f42ab8cb503805282a03f6ecbb90d7db65fd057c3f4f9904fa814c488aeae6aa7105ca528c8a7b20d74ebceb4149c9f16c75f07a95db5f2bccbe3b5be2f1febf

  • C:\Users\Admin\AppData\Local\Temp\A285.exe
    MD5

    3ba0b3a3b6d2a66d507acb1f10a24434

    SHA1

    644a4f467c21f8693f7f3c8788360ac3df0fa525

    SHA256

    3d054e3e93c3fccafea80b7e225da90d205282662800aec4624d0641631202b8

    SHA512

    dafa6f2a947598d690441bc418c06bc0c78b63787f189385c2e9b8d47ce4a3ccc7ae18c70c602c4582b15205ca8478ab88cdedcb344dc1ec3f5b0c22c3badc0d

  • C:\Users\Admin\AppData\Local\Temp\A285.exe
    MD5

    3ba0b3a3b6d2a66d507acb1f10a24434

    SHA1

    644a4f467c21f8693f7f3c8788360ac3df0fa525

    SHA256

    3d054e3e93c3fccafea80b7e225da90d205282662800aec4624d0641631202b8

    SHA512

    dafa6f2a947598d690441bc418c06bc0c78b63787f189385c2e9b8d47ce4a3ccc7ae18c70c602c4582b15205ca8478ab88cdedcb344dc1ec3f5b0c22c3badc0d

  • C:\Users\Admin\AppData\Local\Temp\A285.exe
    MD5

    3ba0b3a3b6d2a66d507acb1f10a24434

    SHA1

    644a4f467c21f8693f7f3c8788360ac3df0fa525

    SHA256

    3d054e3e93c3fccafea80b7e225da90d205282662800aec4624d0641631202b8

    SHA512

    dafa6f2a947598d690441bc418c06bc0c78b63787f189385c2e9b8d47ce4a3ccc7ae18c70c602c4582b15205ca8478ab88cdedcb344dc1ec3f5b0c22c3badc0d

  • memory/596-116-0x0000000000400000-0x0000000000409000-memory.dmp
    Filesize

    36KB

  • memory/596-117-0x0000000000402E0C-mapping.dmp
  • memory/932-128-0x0000000000000000-mapping.dmp
  • memory/932-131-0x00000000003D0000-0x00000000003D1000-memory.dmp
    Filesize

    4KB

  • memory/1436-155-0x0000000000400000-0x0000000000420000-memory.dmp
    Filesize

    128KB

  • memory/1436-156-0x0000000000418D2A-mapping.dmp
  • memory/1436-166-0x0000000004EB0000-0x00000000054B6000-memory.dmp
    Filesize

    6.0MB

  • memory/1544-125-0x0000000000402E0C-mapping.dmp
  • memory/2072-152-0x0000000005530000-0x0000000005531000-memory.dmp
    Filesize

    4KB

  • memory/2072-151-0x00000000055B0000-0x00000000055B1000-memory.dmp
    Filesize

    4KB

  • memory/2072-154-0x0000000005750000-0x0000000005751000-memory.dmp
    Filesize

    4KB

  • memory/2072-146-0x0000000000000000-mapping.dmp
  • memory/2072-153-0x0000000005C60000-0x0000000005C61000-memory.dmp
    Filesize

    4KB

  • memory/2072-149-0x0000000000D50000-0x0000000000D51000-memory.dmp
    Filesize

    4KB

  • memory/3032-119-0x0000000000650000-0x0000000000666000-memory.dmp
    Filesize

    88KB

  • memory/3032-127-0x0000000000710000-0x0000000000726000-memory.dmp
    Filesize

    88KB

  • memory/3260-120-0x0000000000000000-mapping.dmp
  • memory/4056-118-0x0000000000030000-0x0000000000039000-memory.dmp
    Filesize

    36KB

  • memory/4088-140-0x00000000059B0000-0x00000000059B1000-memory.dmp
    Filesize

    4KB

  • memory/4088-134-0x000000000043713E-mapping.dmp
  • memory/4088-139-0x00000000010B0000-0x00000000010B1000-memory.dmp
    Filesize

    4KB

  • memory/4088-141-0x0000000005200000-0x0000000005201000-memory.dmp
    Filesize

    4KB

  • memory/4088-133-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/4088-145-0x0000000005390000-0x0000000005391000-memory.dmp
    Filesize

    4KB

  • memory/4088-144-0x00000000052D0000-0x00000000052D1000-memory.dmp
    Filesize

    4KB

  • memory/4088-143-0x0000000005260000-0x0000000005261000-memory.dmp
    Filesize

    4KB

  • memory/4088-142-0x00000000053A0000-0x00000000053A1000-memory.dmp
    Filesize

    4KB

  • memory/4088-169-0x00000000056F0000-0x00000000056F1000-memory.dmp
    Filesize

    4KB

  • memory/4088-171-0x0000000006130000-0x0000000006131000-memory.dmp
    Filesize

    4KB

  • memory/4088-172-0x0000000006D90000-0x0000000006D91000-memory.dmp
    Filesize

    4KB

  • memory/4088-174-0x0000000007490000-0x0000000007491000-memory.dmp
    Filesize

    4KB