Analysis
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max time kernel
96s -
max time network
155s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
21-05-2022 12:26
Static task
static1
Behavioral task
behavioral1
Sample
PAGO_25_.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
PAGO_25_.exe
Resource
win10v2004-20220414-en
General
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Target
PAGO_25_.exe
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Size
1.2MB
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MD5
94f2908697b9f698d5634f675dc6a5c8
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SHA1
9e6e83f145c01bedd3ef800b16e675d990f9d39e
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SHA256
79789ad11d75901af6b26bcb620abc4db6c1391c00544bf6d293760f98c3df76
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SHA512
042c67a7da5cdff3e159d918bb8fdde12d6b5d176e9b51460d4703ed68b33562c58d98cd140064fae4f336196a0e23efe78545f7bd621f77c305516b78b96ce5
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Temp\79FE0CC911\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 34 IoCs
Processes:
resource yara_rule behavioral1/memory/1504-54-0x0000000001100000-0x000000000123C000-memory.dmp family_masslogger behavioral1/memory/2004-63-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-64-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-65-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-66-0x00000000004A382E-mapping.dmp family_masslogger behavioral1/memory/2004-69-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-71-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-74-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-76-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-78-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-80-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-82-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-84-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-86-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-88-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-90-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-92-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-94-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-96-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-98-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-100-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-102-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-104-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-106-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-108-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-110-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-112-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-114-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-116-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-118-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-120-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-122-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-124-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger behavioral1/memory/2004-126-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger -
MassLogger log file 1 IoCs
Detects a log file produced by MassLogger.
Processes:
yara_rule masslogger_log_file -
Executes dropped EXE 1 IoCs
Processes:
InstallUtil.exepid process 2004 InstallUtil.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
InstallUtil.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation InstallUtil.exe -
Loads dropped DLL 1 IoCs
Processes:
PAGO_25_.exepid process 1504 PAGO_25_.exe -
Obfuscated with Agile.Net obfuscator 1 IoCs
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
Processes:
resource yara_rule behavioral1/memory/1504-55-0x0000000000380000-0x0000000000394000-memory.dmp agile_net -
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:
PAGO_25_.exedescription pid process target process PID 1504 set thread context of 2004 1504 PAGO_25_.exe InstallUtil.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
PAGO_25_.exeInstallUtil.exepid process 1504 PAGO_25_.exe 1504 PAGO_25_.exe 1504 PAGO_25_.exe 2004 InstallUtil.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
PAGO_25_.exeInstallUtil.exedescription pid process Token: SeDebugPrivilege 1504 PAGO_25_.exe Token: SeDebugPrivilege 2004 InstallUtil.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
PAGO_25_.exedescription pid process target process PID 1504 wrote to memory of 2004 1504 PAGO_25_.exe InstallUtil.exe PID 1504 wrote to memory of 2004 1504 PAGO_25_.exe InstallUtil.exe PID 1504 wrote to memory of 2004 1504 PAGO_25_.exe InstallUtil.exe PID 1504 wrote to memory of 2004 1504 PAGO_25_.exe InstallUtil.exe PID 1504 wrote to memory of 2004 1504 PAGO_25_.exe InstallUtil.exe PID 1504 wrote to memory of 2004 1504 PAGO_25_.exe InstallUtil.exe PID 1504 wrote to memory of 2004 1504 PAGO_25_.exe InstallUtil.exe PID 1504 wrote to memory of 2004 1504 PAGO_25_.exe InstallUtil.exe PID 1504 wrote to memory of 2004 1504 PAGO_25_.exe InstallUtil.exe PID 1504 wrote to memory of 2004 1504 PAGO_25_.exe InstallUtil.exe PID 1504 wrote to memory of 2004 1504 PAGO_25_.exe InstallUtil.exe PID 1504 wrote to memory of 2004 1504 PAGO_25_.exe InstallUtil.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\PAGO_25_.exe"C:\Users\Admin\AppData\Local\Temp\PAGO_25_.exe"1⤵
- Loads dropped DLL
- 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\InstallUtil.exe"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"2⤵
- Executes dropped EXE
- 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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C:\Users\Admin\AppData\Local\Temp\InstallUtil.exeFilesize
40KB
MD591c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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C:\Users\Admin\AppData\Local\Temp\InstallUtil.exeFilesize
40KB
MD591c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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\Users\Admin\AppData\Local\Temp\InstallUtil.exeFilesize
40KB
MD591c9ae9c9a17a9db5e08b120e668c74c
SHA150770954c1ceb0bb6f1d5d3f2de2a0a065773723
SHA256e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f
SHA512ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e
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memory/1504-55-0x0000000000380000-0x0000000000394000-memory.dmpFilesize
80KB
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memory/1504-56-0x0000000000390000-0x0000000000398000-memory.dmpFilesize
32KB
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memory/1504-57-0x0000000000550000-0x0000000000558000-memory.dmpFilesize
32KB
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memory/1504-58-0x0000000000560000-0x0000000000568000-memory.dmpFilesize
32KB
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memory/1504-54-0x0000000001100000-0x000000000123C000-memory.dmpFilesize
1.2MB
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memory/2004-86-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-92-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-65-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-66-0x00000000004A382E-mapping.dmp
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memory/2004-63-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-69-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-71-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-61-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-74-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-76-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-78-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-80-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-82-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-84-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-60-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-88-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-90-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-64-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-94-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-96-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-98-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-100-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-102-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-104-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-106-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-108-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-110-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-112-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-114-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-116-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-118-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-120-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-122-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-124-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-126-0x0000000000400000-0x00000000004A8000-memory.dmpFilesize
672KB
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memory/2004-580-0x0000000000590000-0x00000000005D0000-memory.dmpFilesize
256KB