Analysis
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max time kernel
56s -
max time network
45s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
21-05-2022 12:25
Static task
static1
Behavioral task
behavioral1
Sample
DHL_MAY_.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
DHL_MAY_.exe
Resource
win10v2004-20220414-en
General
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Target
DHL_MAY_.exe
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Size
816KB
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MD5
4ea547efe0fcb7dde07eb2a9c6891040
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SHA1
f45314bf78ce40bb81df533dbd6861260a609c4f
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SHA256
cd5eeb8026313e1bcfff3db5c1e30ff15477427f16e23e885df3b57adceac0b6
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SHA512
77f30789b5f08bf67522228d5cc818ebd12b0f681bca1d7f4f3b3694deb67c6528e8390b435fca0cadcb722aa789bb0e966e6c4f2434382c3660192d54db2025
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 32 IoCs
Processes:
resource yara_rule behavioral1/memory/2044-61-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-62-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-63-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-64-0x00000000004ABEAE-mapping.dmp family_masslogger behavioral1/memory/2044-66-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-68-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-70-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-72-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-74-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-76-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-78-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-80-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-82-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-84-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-86-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-88-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-90-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-92-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-94-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-96-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-98-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-100-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-102-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-104-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-106-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-108-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-110-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-112-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-114-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-116-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-118-0x0000000000400000-0x00000000004B0000-memory.dmp family_masslogger behavioral1/memory/2044-120-0x0000000000400000-0x00000000004B0000-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/1792-57-0x00000000084A0000-0x0000000008558000-memory.dmp rezer0 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
DHL_MAY_.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation DHL_MAY_.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
DHL_MAY_.exedescription pid process target process PID 1792 set thread context of 2044 1792 DHL_MAY_.exe DHL_MAY_.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
DHL_MAY_.exeDHL_MAY_.exepid process 1792 DHL_MAY_.exe 1792 DHL_MAY_.exe 2044 DHL_MAY_.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
DHL_MAY_.exeDHL_MAY_.exedescription pid process Token: SeDebugPrivilege 1792 DHL_MAY_.exe Token: SeDebugPrivilege 2044 DHL_MAY_.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
DHL_MAY_.exedescription pid process target process PID 1792 wrote to memory of 2044 1792 DHL_MAY_.exe DHL_MAY_.exe PID 1792 wrote to memory of 2044 1792 DHL_MAY_.exe DHL_MAY_.exe PID 1792 wrote to memory of 2044 1792 DHL_MAY_.exe DHL_MAY_.exe PID 1792 wrote to memory of 2044 1792 DHL_MAY_.exe DHL_MAY_.exe PID 1792 wrote to memory of 2044 1792 DHL_MAY_.exe DHL_MAY_.exe PID 1792 wrote to memory of 2044 1792 DHL_MAY_.exe DHL_MAY_.exe PID 1792 wrote to memory of 2044 1792 DHL_MAY_.exe DHL_MAY_.exe PID 1792 wrote to memory of 2044 1792 DHL_MAY_.exe DHL_MAY_.exe PID 1792 wrote to memory of 2044 1792 DHL_MAY_.exe DHL_MAY_.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\DHL_MAY_.exe"C:\Users\Admin\AppData\Local\Temp\DHL_MAY_.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\DHL_MAY_.exe"C:\Users\Admin\AppData\Local\Temp\DHL_MAY_.exe"2⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/1792-54-0x0000000000090000-0x0000000000162000-memory.dmpFilesize
840KB
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memory/1792-55-0x0000000076461000-0x0000000076463000-memory.dmpFilesize
8KB
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memory/1792-56-0x00000000005F0000-0x00000000005F8000-memory.dmpFilesize
32KB
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memory/1792-57-0x00000000084A0000-0x0000000008558000-memory.dmpFilesize
736KB
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memory/2044-58-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-59-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-61-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-62-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-63-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-64-0x00000000004ABEAE-mapping.dmp
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memory/2044-66-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-68-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-70-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-72-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-74-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-76-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-78-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-80-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-82-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-84-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-86-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-88-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-90-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-92-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-94-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-96-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-98-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-100-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-102-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-104-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-106-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-108-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-110-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-112-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-114-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-116-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-118-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-120-0x0000000000400000-0x00000000004B0000-memory.dmpFilesize
704KB
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memory/2044-577-0x0000000000640000-0x0000000000684000-memory.dmpFilesize
272KB
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memory/2044-579-0x0000000000705000-0x0000000000716000-memory.dmpFilesize
68KB