General
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Target
grs.exe
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Size
3.2MB
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Sample
220324-wqxamscde6
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MD5
5692bc30e83b7a435a60f1d76794db03
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SHA1
b7b37a93db95321fb31c57645b4c61e1c5e4fc77
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SHA256
9631d8bd74d4a0384cae4396e9b0fa5f5898496028e24a274f3d571ce5c22b3a
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SHA512
12751643c5bb0938aff3535c86c4977e66c44920ced333a69922c4bc86286bad9df98de896d9c54d347a7465fe0373999bff65ac11f485d50e27ef469d847d0a
Static task
static1
Behavioral task
behavioral1
Sample
grs.exe
Resource
win7-20220311-en
Behavioral task
behavioral2
Sample
grs.exe
Resource
win10v2004-20220310-en
Malware Config
Extracted
socelars
http://www.fddnice.pw/
http://www.sokoinfo.pw/
http://www.zzhlike.pw/
http://www.wygexde.xyz/
Extracted
smokeloader
2020
http://perseus007.xyz/upload/
http://lambos1.xyz/upload/
http://cipluks.com/upload/
http://ragnar77.com/upload/
http://aslauk.com/upload/
http://qunersoo.xyz/upload /
http://hostunes.info/upload/
http://leonisdas.xyz/upload/
Extracted
redline
v113
45.150.67.141:8054
Targets
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Target
grs.exe
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Size
3.2MB
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MD5
5692bc30e83b7a435a60f1d76794db03
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SHA1
b7b37a93db95321fb31c57645b4c61e1c5e4fc77
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SHA256
9631d8bd74d4a0384cae4396e9b0fa5f5898496028e24a274f3d571ce5c22b3a
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SHA512
12751643c5bb0938aff3535c86c4977e66c44920ced333a69922c4bc86286bad9df98de896d9c54d347a7465fe0373999bff65ac11f485d50e27ef469d847d0a
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RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
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RedLine Payload
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Socelars Payload
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Suspicious use of NtCreateUserProcessOtherParentProcess
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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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Obfuscated with Agile.Net obfuscator
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
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Adds Run key to start application
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Legitimate hosting services abused for malware hosting/C2
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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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Drops file in System32 directory
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Suspicious use of SetThreadContext
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