General
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Target
0876731d852c663354e776410f30bb1574d6c7b8735b8a81dfa2f0270319e56d
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Size
443KB
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Sample
220530-1qspnsgddq
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MD5
a2b464f08c2e7bb43c902aa2a2f8fa19
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SHA1
0bd743fe4900777b51ce409a94575e82dca29560
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SHA256
0876731d852c663354e776410f30bb1574d6c7b8735b8a81dfa2f0270319e56d
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SHA512
7f88bd9823fd5ede00f7178992eec1f250e05c57b8816507b688ff17d3dc4a23f10016413e3237336332c305aaf7a8d3cfbccf4e5d4c1ebb1852504426aa3845
Static task
static1
Behavioral task
behavioral1
Sample
0876731d852c663354e776410f30bb1574d6c7b8735b8a81dfa2f0270319e56d.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
0876731d852c663354e776410f30bb1574d6c7b8735b8a81dfa2f0270319e56d.exe
Resource
win10v2004-20220414-en
Malware Config
Targets
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Target
0876731d852c663354e776410f30bb1574d6c7b8735b8a81dfa2f0270319e56d
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Size
443KB
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MD5
a2b464f08c2e7bb43c902aa2a2f8fa19
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SHA1
0bd743fe4900777b51ce409a94575e82dca29560
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SHA256
0876731d852c663354e776410f30bb1574d6c7b8735b8a81dfa2f0270319e56d
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SHA512
7f88bd9823fd5ede00f7178992eec1f250e05c57b8816507b688ff17d3dc4a23f10016413e3237336332c305aaf7a8d3cfbccf4e5d4c1ebb1852504426aa3845
Score10/10-
ISR Stealer
ISR Stealer is a modified version of Hackhound Stealer written in visual basic.
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ISR Stealer Payload
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Executes dropped EXE
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Loads dropped DLL
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Adds Run key to start application
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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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Suspicious use of SetThreadContext
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