Analysis

  • max time kernel
    150s
  • max time network
    139s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    03-07-2021 00:01

General

  • Target

    a0c5664aa4a6a4f84d1d8af648c10b8c.exe

  • Size

    685KB

  • MD5

    a0c5664aa4a6a4f84d1d8af648c10b8c

  • SHA1

    59ae34134303fa91101159f632e681560391b3d4

  • SHA256

    fb68afd0254bcaad62a35fe249e9bbcbd10697e900473676576c7fd6c859a293

  • SHA512

    44f4e3268dfd1e72dd878e8b5c0a4433925d26ceb573d32eb8e931a1a32a75d5e2a681d5417ddfc01eeedb9e300e17816b3522023f453faf9baedda29856516f

Malware Config

Extracted

Family

vidar

Version

39.4

Botnet

890

C2

https://sergeevih43.tumblr.com

Attributes
  • profile_id

    890

Extracted

Family

redline

Botnet

build1

C2

185.244.182.34:32068

Signatures

  • RedLine

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

  • RedLine Payload 2 IoCs
  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Vidar Stealer 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 6 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • 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.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • autoit_exe 2 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Kills process with taskkill 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 3 IoCs
  • Modifies registry class 64 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 13 IoCs
  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of SendNotifyMessage 6 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a0c5664aa4a6a4f84d1d8af648c10b8c.exe
    "C:\Users\Admin\AppData\Local\Temp\a0c5664aa4a6a4f84d1d8af648c10b8c.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:860
    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\File.exe
      "C:\Users\Admin\AppData\Local\Temp\RarSFX0\File.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:2812
      • C:\Users\Public\run.exe
        C:\Users\Public\run.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Checks processor information in registry
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:2284
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c taskkill /im run.exe /f & timeout /t 6 & del /f /q "C:\Users\Public\run.exe" & del C:\ProgramData\*.dll & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:4536
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /im run.exe /f
            5⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:4584
          • C:\Windows\SysWOW64\timeout.exe
            timeout /t 6
            5⤵
            • Delays execution with timeout.exe
            PID:4676
      • C:\Users\Public\run2.exe
        C:\Users\Public\run2.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1436
        • C:\Users\Public\run2.exe
          C:\Users\Public\run2.exe
          4⤵
          • Executes dropped EXE
          PID:4912
        • C:\Users\Public\run2.exe
          C:\Users\Public\run2.exe
          4⤵
          • Executes dropped EXE
          PID:4924
        • C:\Users\Public\run2.exe
          C:\Users\Public\run2.exe
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4936
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe" -ServerName:MicrosoftEdge.AppXdnhjhccw3zf0j06tkg3jtqr00qdm0khc.mca
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:908
  • C:\Windows\system32\browser_broker.exe
    C:\Windows\system32\browser_broker.exe -Embedding
    1⤵
    • Modifies Internet Explorer settings
    PID:4088
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
    1⤵
    • Modifies registry class
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4120
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
    1⤵
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    PID:4188
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
    1⤵
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    PID:4744
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
    1⤵
    • Modifies registry class
    PID:5112
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
    1⤵
    • Modifies registry class
    PID:512

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

3
T1005

Command and Control

Web Service

1
T1102

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\freebl3.dll
    MD5

    ef2834ac4ee7d6724f255beaf527e635

    SHA1

    5be8c1e73a21b49f353c2ecfa4108e43a883cb7b

    SHA256

    a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba

    SHA512

    c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2

  • C:\ProgramData\mozglue.dll
    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

  • C:\ProgramData\msvcp140.dll
    MD5

    109f0f02fd37c84bfc7508d4227d7ed5

    SHA1

    ef7420141bb15ac334d3964082361a460bfdb975

    SHA256

    334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4

    SHA512

    46eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39

  • C:\ProgramData\nss3.dll
    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • C:\ProgramData\softokn3.dll
    MD5

    a2ee53de9167bf0d6c019303b7ca84e5

    SHA1

    2a3c737fa1157e8483815e98b666408a18c0db42

    SHA256

    43536adef2ddcc811c28d35fa6ce3031029a2424ad393989db36169ff2995083

    SHA512

    45b56432244f86321fa88fbcca6a0d2a2f7f4e0648c1d7d7b1866adc9daa5eddd9f6bb73662149f279c9ab60930dad1113c8337cb5e6ec9eed5048322f65f7d8

  • C:\ProgramData\vcruntime140.dll
    MD5

    7587bf9cb4147022cd5681b015183046

    SHA1

    f2106306a8f6f0da5afb7fc765cfa0757ad5a628

    SHA256

    c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d

    SHA512

    0b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\run2.exe.log
    MD5

    7438b57da35c10c478469635b79e33e1

    SHA1

    5ffcbdfbfd800f67d6d9d6ee46de2eb13fcbb9a5

    SHA256

    b253c066d4a6604aaa5204b09c1edde92c410b0af351f3760891f5e56c867f70

    SHA512

    5887796f8ceb1c5ae790caff0020084df49ea8d613b78656a47dc9a569c5c86a9b16ec2ebe0d6f34c5e3001026385bb1282434cc3ffc7bda99427c154c04b45a

  • C:\Users\Admin\AppData\Local\Temp\RarSFX0\File.exe
    MD5

    954264f2ba5b24bbeecb293be714832c

    SHA1

    fde3ad6e6d8ab951b002c7ca17e867bf3c1d9ba0

    SHA256

    db5906a6a58c5f7e8991fb5c3a7201843142844650eb5b89bdf89094aba9e96c

    SHA512

    8fb15e5888d713e10df04b64c0a24250547a978eac9a7b25d653c343f01afc204fa661937a76644a2dcd3f5b65225450d3aaecb67014125a50722df21467ee53

  • C:\Users\Admin\AppData\Local\Temp\RarSFX0\File.exe
    MD5

    954264f2ba5b24bbeecb293be714832c

    SHA1

    fde3ad6e6d8ab951b002c7ca17e867bf3c1d9ba0

    SHA256

    db5906a6a58c5f7e8991fb5c3a7201843142844650eb5b89bdf89094aba9e96c

    SHA512

    8fb15e5888d713e10df04b64c0a24250547a978eac9a7b25d653c343f01afc204fa661937a76644a2dcd3f5b65225450d3aaecb67014125a50722df21467ee53

  • C:\Users\Public\run.exe
    MD5

    dbda4dcfaea632d008434a94928058a1

    SHA1

    5f8ff4e123e7e23c88479660adcd4a73ef6a5a31

    SHA256

    ffba2354a29c3cff94d61abbe2d63b52b431b4a8ad2d6b3e3766e41f86b39dc7

    SHA512

    3050174951def6a868ce8a16840c23785ecbef360bbb022ad871a3a799eb071996535dc776ea3f8fccd4a7edd44fbd20ad6cf0da1af254903f4e5c247853e220

  • C:\Users\Public\run.exe
    MD5

    dbda4dcfaea632d008434a94928058a1

    SHA1

    5f8ff4e123e7e23c88479660adcd4a73ef6a5a31

    SHA256

    ffba2354a29c3cff94d61abbe2d63b52b431b4a8ad2d6b3e3766e41f86b39dc7

    SHA512

    3050174951def6a868ce8a16840c23785ecbef360bbb022ad871a3a799eb071996535dc776ea3f8fccd4a7edd44fbd20ad6cf0da1af254903f4e5c247853e220

  • C:\Users\Public\run2.exe
    MD5

    cbbfe40c56b1ae876a0770fa21f3c265

    SHA1

    280d4006fc0ef090afe5ee6122f699cea52dc01f

    SHA256

    cae8c2fe828f1049192c3cd97b0a918222d8450027afdfe683ac6c4651f6da21

    SHA512

    5ca292eef462b8f9f9ccaa2be142ba7cb2e436a7a1578b4527d9002950309a78a9b01ae34db16e3259d508ca78e7bfeb2ab2f09953044ee101d04b1ce229184a

  • C:\Users\Public\run2.exe
    MD5

    cbbfe40c56b1ae876a0770fa21f3c265

    SHA1

    280d4006fc0ef090afe5ee6122f699cea52dc01f

    SHA256

    cae8c2fe828f1049192c3cd97b0a918222d8450027afdfe683ac6c4651f6da21

    SHA512

    5ca292eef462b8f9f9ccaa2be142ba7cb2e436a7a1578b4527d9002950309a78a9b01ae34db16e3259d508ca78e7bfeb2ab2f09953044ee101d04b1ce229184a

  • C:\Users\Public\run2.exe
    MD5

    cbbfe40c56b1ae876a0770fa21f3c265

    SHA1

    280d4006fc0ef090afe5ee6122f699cea52dc01f

    SHA256

    cae8c2fe828f1049192c3cd97b0a918222d8450027afdfe683ac6c4651f6da21

    SHA512

    5ca292eef462b8f9f9ccaa2be142ba7cb2e436a7a1578b4527d9002950309a78a9b01ae34db16e3259d508ca78e7bfeb2ab2f09953044ee101d04b1ce229184a

  • C:\Users\Public\run2.exe
    MD5

    cbbfe40c56b1ae876a0770fa21f3c265

    SHA1

    280d4006fc0ef090afe5ee6122f699cea52dc01f

    SHA256

    cae8c2fe828f1049192c3cd97b0a918222d8450027afdfe683ac6c4651f6da21

    SHA512

    5ca292eef462b8f9f9ccaa2be142ba7cb2e436a7a1578b4527d9002950309a78a9b01ae34db16e3259d508ca78e7bfeb2ab2f09953044ee101d04b1ce229184a

  • C:\Users\Public\run2.exe
    MD5

    cbbfe40c56b1ae876a0770fa21f3c265

    SHA1

    280d4006fc0ef090afe5ee6122f699cea52dc01f

    SHA256

    cae8c2fe828f1049192c3cd97b0a918222d8450027afdfe683ac6c4651f6da21

    SHA512

    5ca292eef462b8f9f9ccaa2be142ba7cb2e436a7a1578b4527d9002950309a78a9b01ae34db16e3259d508ca78e7bfeb2ab2f09953044ee101d04b1ce229184a

  • \ProgramData\mozglue.dll
    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

  • \ProgramData\nss3.dll
    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • memory/1436-122-0x0000000000000000-mapping.dmp
  • memory/1436-143-0x0000000004BC0000-0x0000000004BC1000-memory.dmp
    Filesize

    4KB

  • memory/1436-144-0x0000000002500000-0x0000000002509000-memory.dmp
    Filesize

    36KB

  • memory/1436-129-0x0000000004CF0000-0x0000000004CF1000-memory.dmp
    Filesize

    4KB

  • memory/1436-125-0x0000000000340000-0x0000000000341000-memory.dmp
    Filesize

    4KB

  • memory/1436-142-0x0000000004C00000-0x0000000004C01000-memory.dmp
    Filesize

    4KB

  • memory/2284-128-0x0000000000400000-0x0000000000636000-memory.dmp
    Filesize

    2.2MB

  • memory/2284-127-0x0000000000AF0000-0x0000000000B8D000-memory.dmp
    Filesize

    628KB

  • memory/2284-119-0x0000000000000000-mapping.dmp
  • memory/2812-116-0x0000000000000000-mapping.dmp
  • memory/4536-133-0x0000000000000000-mapping.dmp
  • memory/4584-134-0x0000000000000000-mapping.dmp
  • memory/4676-135-0x0000000000000000-mapping.dmp
  • memory/4936-153-0x0000000005510000-0x0000000005511000-memory.dmp
    Filesize

    4KB

  • memory/4936-148-0x0000000000417EDA-mapping.dmp
  • memory/4936-147-0x0000000000400000-0x000000000041E000-memory.dmp
    Filesize

    120KB

  • memory/4936-154-0x0000000006020000-0x0000000006021000-memory.dmp
    Filesize

    4KB

  • memory/4936-155-0x0000000005180000-0x0000000005181000-memory.dmp
    Filesize

    4KB

  • memory/4936-156-0x0000000005130000-0x0000000005131000-memory.dmp
    Filesize

    4KB

  • memory/4936-157-0x0000000005420000-0x0000000005421000-memory.dmp
    Filesize

    4KB

  • memory/4936-158-0x0000000005460000-0x0000000005461000-memory.dmp
    Filesize

    4KB

  • memory/4936-159-0x00000000029B0000-0x00000000029B1000-memory.dmp
    Filesize

    4KB

  • memory/4936-160-0x0000000007770000-0x0000000007771000-memory.dmp
    Filesize

    4KB

  • memory/4936-161-0x0000000008290000-0x0000000008291000-memory.dmp
    Filesize

    4KB

  • memory/4936-162-0x0000000008990000-0x0000000008991000-memory.dmp
    Filesize

    4KB

  • memory/4936-163-0x0000000008460000-0x0000000008461000-memory.dmp
    Filesize

    4KB