Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    25-11-2020 10:45

General

  • Target

    0x000300000001ac9e-134.exe

  • Size

    311KB

  • MD5

    fdde60834af109d71f4c7d28b865c8a1

  • SHA1

    4f721105161b74e07b5ccd762d32932989bfb03a

  • SHA256

    b0296c0000c40d59a268b223015872d7e57c427358b5e95d1bd6e4ac40dd0f87

  • SHA512

    fecd130a4431fa81a1cf9be8019464b55bfb173dde91ced3a5828516bd51db509fd547c12dd483c00cdf5ade878ab542ffb6371238ccf960622bb464187b5778

Malware Config

Extracted

Family

smokeloader

Version

2019

C2

http://10022020newfolder1002002131-service1002.space/

http://10022020newfolder1002002231-service1002.space/

http://10022020newfolder3100231-service1002.space/

http://10022020newfolder1002002431-service1002.space/

http://10022020newfolder1002002531-service1002.space/

http://10022020newfolder33417-01242510022020.space/

http://10022020test125831-service1002012510022020.space/

http://10022020test136831-service1002012510022020.space/

http://10022020test147831-service1002012510022020.space/

http://10022020test146831-service1002012510022020.space/

http://10022020test134831-service1002012510022020.space/

http://10022020est213531-service100201242510022020.ru/

http://10022020yes1t3481-service1002012510022020.ru/

http://10022020test13561-service1002012510022020.su/

http://10022020test14781-service1002012510022020.info/

http://10022020test13461-service1002012510022020.net/

http://10022020test15671-service1002012510022020.tech/

http://10022020test12671-service1002012510022020.online/

http://10022020utest1341-service1002012510022020.ru/

http://10022020uest71-service100201dom2510022020.ru/

rc4.i32
rc4.i32

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
  • AgentTesla Payload 2 IoCs
  • Executes dropped EXE 5 IoCs
  • Modifies Installed Components in the registry 2 TTPs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 7 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • JavaScript code in executable 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Program crash 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 15 IoCs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies Control Panel 5 IoCs
  • Modifies registry class 29 IoCs
  • Suspicious behavior: EnumeratesProcesses 1604 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 66 IoCs
  • Suspicious use of FindShellTrayWindow 45 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Deletes itself
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2756
    • C:\Users\Admin\AppData\Local\Temp\0x000300000001ac9e-134.exe
      "C:\Users\Admin\AppData\Local\Temp\0x000300000001ac9e-134.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:4076
      • C:\Users\Admin\AppData\Local\Temp\0x000300000001ac9e-134.exe
        "C:\Users\Admin\AppData\Local\Temp\0x000300000001ac9e-134.exe"
        3⤵
        • Loads dropped DLL
        • Checks SCSI registry key(s)
        • Suspicious behavior: MapViewOfSection
        PID:4044
    • C:\Users\Admin\AppData\Local\Temp\E88C.tmp.exe
      C:\Users\Admin\AppData\Local\Temp\E88C.tmp.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:2060
    • C:\Users\Admin\AppData\Local\Temp\EB1D.tmp.exe
      C:\Users\Admin\AppData\Local\Temp\EB1D.tmp.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:4056
    • C:\Users\Admin\AppData\Local\Temp\EE7A.tmp.exe
      C:\Users\Admin\AppData\Local\Temp\EE7A.tmp.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1700
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2756 -s 2484
      2⤵
      • Suspicious use of NtCreateProcessExOtherParentProcess
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:2420
  • C:\Users\Admin\AppData\Roaming\fcrcjcf
    C:\Users\Admin\AppData\Roaming\fcrcjcf
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3372
    • C:\Users\Admin\AppData\Roaming\fcrcjcf
      C:\Users\Admin\AppData\Roaming\fcrcjcf
      2⤵
      • Executes dropped EXE
      PID:1540
  • C:\Windows\explorer.exe
    explorer.exe
    1⤵
    • Enumerates connected drives
    • Checks SCSI registry key(s)
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:2844
  • C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe
    "C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca
    1⤵
    • Modifies Control Panel
    • Suspicious use of SetWindowsHookEx
    PID:2680
  • C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe
    "C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe" -ServerName:CortanaUI.AppXa50dqqa5gqv4a428c9y1jjw7m3btvepj.mca
    1⤵
    • Enumerates system info in registry
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:2460

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

4
T1012

Peripheral Device Discovery

2
T1120

System Information Discovery

3
T1082

Collection

Data from Local System

2
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\4DD3.tmp
    MD5

    50741b3f2d7debf5d2bed63d88404029

    SHA1

    56210388a627b926162b36967045be06ffb1aad3

    SHA256

    f2f8732ae464738372ff274b7e481366cecdd2337210d4a3cbcd089c958a730c

    SHA512

    fac6bfe35b1ee08b3d42d330516a260d9cdb4a90bbb0491411a583029b92a59d20af3552372ea8fb3f59442b3945bf524ef284127f397ae7179467080be8e9b3

  • C:\Users\Admin\AppData\Local\Temp\E88C.tmp.exe
    MD5

    a69e12607d01237460808fa1709e5e86

    SHA1

    4a12f82aee1c90e70cdf6be863ce1a749c8ae411

    SHA256

    188e05efb42c1f7fdb5c910a6614f710a87ae642b23ac9ffe3f75246744865bc

    SHA512

    7533e6da6bac0405fc8b608da8020b54b6ee02592e6fd40ea342e130a8a876ae5ef4a1fd636d95e76339dbf8be45cecbd22ca2d0a4635b055ffafec3d7e15284

  • C:\Users\Admin\AppData\Local\Temp\E88C.tmp.exe
    MD5

    a69e12607d01237460808fa1709e5e86

    SHA1

    4a12f82aee1c90e70cdf6be863ce1a749c8ae411

    SHA256

    188e05efb42c1f7fdb5c910a6614f710a87ae642b23ac9ffe3f75246744865bc

    SHA512

    7533e6da6bac0405fc8b608da8020b54b6ee02592e6fd40ea342e130a8a876ae5ef4a1fd636d95e76339dbf8be45cecbd22ca2d0a4635b055ffafec3d7e15284

  • C:\Users\Admin\AppData\Local\Temp\EB1D.tmp.exe
    MD5

    4d58af2acb8147d09c1d1874860755e6

    SHA1

    04d466ae9c5bc0a8d6720b21447f056420c92bde

    SHA256

    e8012f7e8dcb980e8db82ac0158fb8f2be76388052ef74802e1bfae266d9b861

    SHA512

    e7b77629ad8299353e7698011c1fa04de9623897ad3aa2cd60e9125c68da0adf14911517ecf39f6f5396bf40792fa0ca14feef80ab4c8c722ce97db07e9574ad

  • C:\Users\Admin\AppData\Local\Temp\EB1D.tmp.exe
    MD5

    4d58af2acb8147d09c1d1874860755e6

    SHA1

    04d466ae9c5bc0a8d6720b21447f056420c92bde

    SHA256

    e8012f7e8dcb980e8db82ac0158fb8f2be76388052ef74802e1bfae266d9b861

    SHA512

    e7b77629ad8299353e7698011c1fa04de9623897ad3aa2cd60e9125c68da0adf14911517ecf39f6f5396bf40792fa0ca14feef80ab4c8c722ce97db07e9574ad

  • C:\Users\Admin\AppData\Local\Temp\EE7A.tmp.exe
    MD5

    f2b4b6c26a03a1be0c3b85c0482a8c30

    SHA1

    b39eabd2d680440847baf150d4c9423515fea7d5

    SHA256

    501614b9f1d98a5b2ca1b11b251c61e05f1225aa5a344788375df28812a6232f

    SHA512

    0e5fe73e6c981986df1299cf0dfa88cc3b78532b83d6b93e671487de67c5dea16724a882dd61a6208b78b866250d0dc5f2cad872b1b39942bf9fd15cd8c4a5b4

  • C:\Users\Admin\AppData\Local\Temp\EE7A.tmp.exe
    MD5

    f2b4b6c26a03a1be0c3b85c0482a8c30

    SHA1

    b39eabd2d680440847baf150d4c9423515fea7d5

    SHA256

    501614b9f1d98a5b2ca1b11b251c61e05f1225aa5a344788375df28812a6232f

    SHA512

    0e5fe73e6c981986df1299cf0dfa88cc3b78532b83d6b93e671487de67c5dea16724a882dd61a6208b78b866250d0dc5f2cad872b1b39942bf9fd15cd8c4a5b4

  • C:\Users\Admin\AppData\Roaming\fcrcjcf
    MD5

    fdde60834af109d71f4c7d28b865c8a1

    SHA1

    4f721105161b74e07b5ccd762d32932989bfb03a

    SHA256

    b0296c0000c40d59a268b223015872d7e57c427358b5e95d1bd6e4ac40dd0f87

    SHA512

    fecd130a4431fa81a1cf9be8019464b55bfb173dde91ced3a5828516bd51db509fd547c12dd483c00cdf5ade878ab542ffb6371238ccf960622bb464187b5778

  • C:\Users\Admin\AppData\Roaming\fcrcjcf
    MD5

    fdde60834af109d71f4c7d28b865c8a1

    SHA1

    4f721105161b74e07b5ccd762d32932989bfb03a

    SHA256

    b0296c0000c40d59a268b223015872d7e57c427358b5e95d1bd6e4ac40dd0f87

    SHA512

    fecd130a4431fa81a1cf9be8019464b55bfb173dde91ced3a5828516bd51db509fd547c12dd483c00cdf5ade878ab542ffb6371238ccf960622bb464187b5778

  • C:\Users\Admin\AppData\Roaming\fcrcjcf
    MD5

    fdde60834af109d71f4c7d28b865c8a1

    SHA1

    4f721105161b74e07b5ccd762d32932989bfb03a

    SHA256

    b0296c0000c40d59a268b223015872d7e57c427358b5e95d1bd6e4ac40dd0f87

    SHA512

    fecd130a4431fa81a1cf9be8019464b55bfb173dde91ced3a5828516bd51db509fd547c12dd483c00cdf5ade878ab542ffb6371238ccf960622bb464187b5778

  • \Users\Admin\AppData\LocalLow\nb98wqnehe8bw89hb\freebl3.dll
    MD5

    60acd24430204ad2dc7f148b8cfe9bdc

    SHA1

    989f377b9117d7cb21cbe92a4117f88f9c7693d9

    SHA256

    9876c53134dbbec4dcca67581f53638eba3fea3a15491aa3cf2526b71032da97

    SHA512

    626c36e9567f57fa8ec9c36d96cbadede9c6f6734a7305ecfb9f798952bbacdfa33a1b6c4999ba5b78897dc2ec6f91870f7ec25b2ceacbaee4be942fe881db01

  • \Users\Admin\AppData\LocalLow\nb98wqnehe8bw89hb\freebl3.dll
    MD5

    60acd24430204ad2dc7f148b8cfe9bdc

    SHA1

    989f377b9117d7cb21cbe92a4117f88f9c7693d9

    SHA256

    9876c53134dbbec4dcca67581f53638eba3fea3a15491aa3cf2526b71032da97

    SHA512

    626c36e9567f57fa8ec9c36d96cbadede9c6f6734a7305ecfb9f798952bbacdfa33a1b6c4999ba5b78897dc2ec6f91870f7ec25b2ceacbaee4be942fe881db01

  • \Users\Admin\AppData\LocalLow\nb98wqnehe8bw89hb\mozglue.dll
    MD5

    eae9273f8cdcf9321c6c37c244773139

    SHA1

    8378e2a2f3635574c106eea8419b5eb00b8489b0

    SHA256

    a0c6630d4012ae0311ff40f4f06911bcf1a23f7a4762ce219b8dffa012d188cc

    SHA512

    06e43e484a89cea9ba9b9519828d38e7c64b040f44cdaeb321cbda574e7551b11fea139ce3538f387a0a39a3d8c4cba7f4cf03e4a3c98db85f8121c2212a9097

  • \Users\Admin\AppData\LocalLow\nb98wqnehe8bw89hb\nss3.dll
    MD5

    02cc7b8ee30056d5912de54f1bdfc219

    SHA1

    a6923da95705fb81e368ae48f93d28522ef552fb

    SHA256

    1989526553fd1e1e49b0fea8036822ca062d3d39c4cab4a37846173d0f1753d5

    SHA512

    0d5dfcf4fb19b27246fa799e339d67cd1b494427783f379267fb2d10d615ffb734711bab2c515062c078f990a44a36f2d15859b1dacd4143dcc35b5c0cee0ef5

  • \Users\Admin\AppData\LocalLow\nb98wqnehe8bw89hb\softokn3.dll
    MD5

    4e8df049f3459fa94ab6ad387f3561ac

    SHA1

    06ed392bc29ad9d5fc05ee254c2625fd65925114

    SHA256

    25a4dae37120426ab060ebb39b7030b3e7c1093cc34b0877f223b6843b651871

    SHA512

    3dd4a86f83465989b2b30c240a7307edd1b92d5c1d5c57d47eff287dc9daa7bace157017908d82e00be90f08ff5badb68019ffc9d881440229dcea5038f61cd6

  • \Users\Admin\AppData\LocalLow\sqlite3.dll
    MD5

    f964811b68f9f1487c2b41e1aef576ce

    SHA1

    b423959793f14b1416bc3b7051bed58a1034025f

    SHA256

    83bc57dcf282264f2b00c21ce0339eac20fcb7401f7c5472c0cd0c014844e5f7

    SHA512

    565b1a7291c6fcb63205907fcd9e72fc2e11ca945afc4468c378edba882e2f314c2ac21a7263880ff7d4b84c2a1678024c1ac9971ac1c1de2bfa4248ec0f98c4

  • \Users\Admin\AppData\Local\Temp\4DD3.tmp
    MD5

    50741b3f2d7debf5d2bed63d88404029

    SHA1

    56210388a627b926162b36967045be06ffb1aad3

    SHA256

    f2f8732ae464738372ff274b7e481366cecdd2337210d4a3cbcd089c958a730c

    SHA512

    fac6bfe35b1ee08b3d42d330516a260d9cdb4a90bbb0491411a583029b92a59d20af3552372ea8fb3f59442b3945bf524ef284127f397ae7179467080be8e9b3

  • memory/1540-10-0x0000000000402A38-mapping.dmp
  • memory/1700-39-0x0000000008D80000-0x0000000008D81000-memory.dmp
    Filesize

    4KB

  • memory/1700-46-0x0000000009A70000-0x0000000009A71000-memory.dmp
    Filesize

    4KB

  • memory/1700-40-0x0000000009900000-0x0000000009901000-memory.dmp
    Filesize

    4KB

  • memory/1700-21-0x0000000000000000-mapping.dmp
  • memory/1700-38-0x0000000008D40000-0x0000000008D41000-memory.dmp
    Filesize

    4KB

  • memory/1700-37-0x00000000092F0000-0x00000000092F1000-memory.dmp
    Filesize

    4KB

  • memory/1700-36-0x0000000008C90000-0x0000000008CB2000-memory.dmp
    Filesize

    136KB

  • memory/1700-30-0x0000000006480000-0x0000000006481000-memory.dmp
    Filesize

    4KB

  • memory/1700-31-0x00000000065F0000-0x00000000065F1000-memory.dmp
    Filesize

    4KB

  • memory/1700-32-0x00000000732E0000-0x00000000739CE000-memory.dmp
    Filesize

    6.9MB

  • memory/1700-35-0x0000000008DF0000-0x0000000008DF1000-memory.dmp
    Filesize

    4KB

  • memory/1700-34-0x00000000066B0000-0x00000000066D4000-memory.dmp
    Filesize

    144KB

  • memory/2060-13-0x0000000000000000-mapping.dmp
  • memory/2420-47-0x0000022F80000000-0x0000022F80001000-memory.dmp
    Filesize

    4KB

  • memory/2420-28-0x0000022FFF5C0000-0x0000022FFF5C1000-memory.dmp
    Filesize

    4KB

  • memory/2420-27-0x0000022FFF5C0000-0x0000022FFF5C1000-memory.dmp
    Filesize

    4KB

  • memory/2420-24-0x0000022FFE850000-0x0000022FFE851000-memory.dmp
    Filesize

    4KB

  • memory/2420-25-0x0000022FFE850000-0x0000022FFE851000-memory.dmp
    Filesize

    4KB

  • memory/2420-49-0x0000022F80000000-0x0000022F80001000-memory.dmp
    Filesize

    4KB

  • memory/2420-48-0x0000022F866F0000-0x0000022F866F1000-memory.dmp
    Filesize

    4KB

  • memory/2756-4-0x0000000000CE0000-0x0000000000CF7000-memory.dmp
    Filesize

    92KB

  • memory/3372-7-0x00000000063F0000-0x00000000063F1000-memory.dmp
    Filesize

    4KB

  • memory/4044-2-0x0000000000402A38-mapping.dmp
  • memory/4044-1-0x0000000000400000-0x000000000040C000-memory.dmp
    Filesize

    48KB

  • memory/4056-29-0x0000000006480000-0x0000000006481000-memory.dmp
    Filesize

    4KB

  • memory/4056-18-0x0000000000000000-mapping.dmp
  • memory/4076-0-0x0000000006310000-0x0000000006311000-memory.dmp
    Filesize

    4KB