Analysis
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max time kernel
95s -
max time network
119s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
21-05-2022 03:21
Static task
static1
Behavioral task
behavioral1
Sample
PO_01456.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
PO_01456.exe
Resource
win10v2004-20220414-en
General
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Target
PO_01456.exe
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Size
892KB
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MD5
eaa8776e7fe85e8f5f8e240a94ff0eaf
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SHA1
a83f3d2bf7cc0fe2e47357b3c5588572a0588f78
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SHA256
f7ecd0e638cbffb3b985691c57451ea93845e8f16e4003d0f91ba3f02eb54c03
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SHA512
c26877bf89520fd98aabf87c926352dc83986cfd1c0dde9740d326642579e19422c970b4f1b634cf5a2af584050af53ee4e3ab0c0db5ea1bd96c73f3f5e6c150
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Temp\3B8E3C2477\Log.txt
masslogger
Signatures
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MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
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MassLogger Main Payload 6 IoCs
Processes:
resource yara_rule behavioral1/memory/2028-60-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2028-61-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2028-62-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2028-63-0x00000000004A319E-mapping.dmp family_masslogger behavioral1/memory/2028-65-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2028-67-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger -
MassLogger log file 1 IoCs
Detects a log file produced by MassLogger.
Processes:
yara_rule masslogger_log_file -
ReZer0 packer 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
Processes:
resource yara_rule behavioral1/memory/916-56-0x00000000051B0000-0x0000000005260000-memory.dmp rezer0 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
PO_01456.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation PO_01456.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 15 IoCs
Processes:
PO_01456.exedescription ioc process Key queried \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO_01456.exe Key queried \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO_01456.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook PO_01456.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO_01456.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO_01456.exe Key opened \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO_01456.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO_01456.exe Key queried \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook PO_01456.exe Key opened \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO_01456.exe Key queried \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook PO_01456.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook PO_01456.exe Key queried \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook PO_01456.exe Key queried \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO_01456.exe Key created \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook PO_01456.exe Key opened \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO_01456.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 4 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
PO_01456.exedescription pid process target process PID 916 set thread context of 2028 916 PO_01456.exe PO_01456.exe -
Processes:
PO_01456.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474 PO_01456.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 040000000100000010000000acb694a59c17e0d791529bb19706a6e40f0000000100000014000000ce0e658aa3e847e467a147b3049191093d055e6f0b0000000100000034000000420061006c00740069006d006f007200650020004300790062006500720054007200750073007400200052006f006f007400000053000000010000002400000030223020060a2b06010401b13e01640130123010060a2b0601040182373c0101030200c0140000000100000014000000e59d5930824758ccacfa085436867b3ab5044df01d0000000100000010000000918ad43a9475f78bb5243de886d8103c09000000010000000c000000300a06082b06010505070301030000000100000014000000d4de20d05e66fc53fe1a50882c78db2852cae47419000000010000001000000068cb42b035ea773e52ef50ecf50ec52920000000010000007b030000308203773082025fa0030201020204020000b9300d06092a864886f70d0101050500305a310b300906035504061302494531123010060355040a130942616c74696d6f726531133011060355040b130a43796265725472757374312230200603550403131942616c74696d6f7265204379626572547275737420526f6f74301e170d3030303531323138343630305a170d3235303531323233353930305a305a310b300906035504061302494531123010060355040a130942616c74696d6f726531133011060355040b130a43796265725472757374312230200603550403131942616c74696d6f7265204379626572547275737420526f6f7430820122300d06092a864886f70d01010105000382010f003082010a0282010100a304bb22ab983d57e826729ab579d429e2e1e89580b1b0e35b8e2b299a64dfa15dedb009056ddb282ece62a262feb488da12eb38eb219dc0412b01527b8877d31c8fc7bab988b56a09e773e81140a7d1ccca628d2de58f0ba650d2a850c328eaf5ab25878a9a961ca967b83f0cd5f7f952132fc21bd57070f08fc012ca06cb9ae1d9ca337a77d6f8ecb9f16844424813d2c0c2a4ae5e60feb6a605fcb4dd075902d459189863f5a563e0900c7d5db2067af385eaebd403ae5e843e5fff15ed69bcf939367275cf77524df3c9902cb93de5c923533f1f2498215c079929bdc63aece76e863a6b97746333bd681831f0788d76bffc9e8e5d2a86a74d90dc271a390203010001a3453043301d0603551d0e04160414e59d5930824758ccacfa085436867b3ab5044df030120603551d130101ff040830060101ff020103300e0603551d0f0101ff040403020106300d06092a864886f70d01010505000382010100850c5d8ee46f51684205a0ddbb4f27258403bdf764fd2dd730e3a41017ebda2929b6793f76f6191323b8100af958a4d46170bd04616a128a17d50abdc5bc307cd6e90c258d86404feccca37e38c637114feddd68318e4cd2b30174eebe755e07481a7f70ff165c84c07985b805fd7fbe6511a30fc002b4f852373904d5a9317a18bfa02af41299f7a34582e33c5ef59d9eb5c89e7c2ec8a49e4e08144b6dfd706d6b1a63bd64e61fb7cef0f29f2ebb1bb7f250887392c2e2e3168d9a3202ab8e18dde91011ee7e35ab90af3e30947ad0333da7650ff5fc8e9e62cf47442c015dbb1db532d247d2382ed0fe81dc326a1eb5ee3cd5fce7811d19c32442ea6339a9 PO_01456.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
PO_01456.exepid process 2028 PO_01456.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
PO_01456.exedescription pid process Token: SeDebugPrivilege 2028 PO_01456.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
PO_01456.exedescription pid process target process PID 916 wrote to memory of 2028 916 PO_01456.exe PO_01456.exe PID 916 wrote to memory of 2028 916 PO_01456.exe PO_01456.exe PID 916 wrote to memory of 2028 916 PO_01456.exe PO_01456.exe PID 916 wrote to memory of 2028 916 PO_01456.exe PO_01456.exe PID 916 wrote to memory of 2028 916 PO_01456.exe PO_01456.exe PID 916 wrote to memory of 2028 916 PO_01456.exe PO_01456.exe PID 916 wrote to memory of 2028 916 PO_01456.exe PO_01456.exe PID 916 wrote to memory of 2028 916 PO_01456.exe PO_01456.exe PID 916 wrote to memory of 2028 916 PO_01456.exe PO_01456.exe -
outlook_office_path 1 IoCs
Processes:
PO_01456.exedescription ioc process Key queried \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO_01456.exe -
outlook_win_path 1 IoCs
Processes:
PO_01456.exedescription ioc process Key queried \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 PO_01456.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\PO_01456.exe"C:\Users\Admin\AppData\Local\Temp\PO_01456.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:916 -
C:\Users\Admin\AppData\Local\Temp\PO_01456.exe"{path}"2⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2028
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/916-54-0x0000000001290000-0x0000000001376000-memory.dmpFilesize
920KB
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memory/916-55-0x00000000002E0000-0x00000000002F0000-memory.dmpFilesize
64KB
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memory/916-56-0x00000000051B0000-0x0000000005260000-memory.dmpFilesize
704KB
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memory/2028-57-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2028-58-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2028-60-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2028-61-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2028-62-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2028-63-0x00000000004A319E-mapping.dmp
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memory/2028-65-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2028-67-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2028-68-0x0000000000B90000-0x0000000000BD4000-memory.dmpFilesize
272KB
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memory/2028-69-0x00000000753B1000-0x00000000753B3000-memory.dmpFilesize
8KB
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memory/2028-70-0x0000000004E85000-0x0000000004E96000-memory.dmpFilesize
68KB