hxxps://link[.]coboinc[.]com/ls/click?upn=fv6jI1K7SY9f4BfhpDrLedlQD5vRv5bp-2FYYFKBfpLvHTWlDPb3QBnB-2Fz-2F32ya1IQgryVbm54Re8vkTisx4i2PawH-2BM7KfgLZ6Z14ragNTS6fCoTjwGVnHrjeSzBDDFOFxWFDthGKqN-2FeH5sh7IFqS0QLrKM3O2yrilKF2-2F9b3KtuWePhKgGUTcB-2BDVoAuqT-2B-2B1Ys5kosCj2BNSAAAcSYP8IJ4Ansim1nlxqEvy-2Bi6xQ-3DWrJ3_lgwpNQji9ieIfmodYciNlUHfOVEqCtU9N7gh2XPE7BXrZwIMbpEPs3Gta9gLr2hrUrvltODLtI3-2Byt7BbuHIvu-2BVVM-2B-2BY-2BbC-2FspVozyvJcGKtk3BwR5Lti7faUG9O1wrHErU8TvOPzCL690uNyOB2MI2rQbKrSqGivPoTIWFf4IA26i6LXAqDJEKQ8mmxGlI8LZRNKGOgPHSQa4JIhhHlnOm35F4nMl6r-2BnOn7fR9QvwirxQ6L0GDFsBItKucAEh1pwYvEOBEMQbdkioRlx61HRdLV4UDEovwZ8-2FkoB-2BfXI-3D

General

Target

https://link.coboinc.com/ls/click?upn=fv6jI1K7SY9f4BfhpDrLedlQD5vRv5bp-2FYYFKBfpLvHTWlDPb3QBnB-2Fz-2F32ya1IQgryVbm54Re8vkTisx4i2PawH-2BM7KfgLZ6Z14ragNTS6fCoTjwGVnHrjeSzBDDFOFxWFDthGKqN-2FeH5sh7IFqS0QLrKM3O2yrilKF2-2F9b3KtuWePhKgGUTcB-2BDVoAuqT-2B-2B1Ys5kosCj2BNSAAAcSYP8IJ4Ansim1nlxqEvy-2Bi6xQ-3DWrJ3_lgwpNQji9ieIfmodYciNlUHfOVEqCtU9N7gh2XPE7BXrZwIMbpEPs3Gta9gLr2hrUrvltODLtI3-2Byt7BbuHIvu-2BVVM-2B-2BY-2BbC-2FspVozyvJcGKtk3BwR5Lti7faUG9O1wrHErU8TvOPzCL690uNyOB2MI2rQbKrSqGivPoTIWFf4IA26i6LXAqDJEKQ8mmxGlI8LZRNKGOgPHSQa4JIhhHlnOm35F4nMl6r-2BnOn7fR9QvwirxQ6L0GDFsBItKucAEh1pwYvEOBEMQbdkioRlx61HRdLV4UDEovwZ8-2FkoB-2BfXI-3D
Sample

210122-bkcewbwwvj

Score

6^/10

ransomware

Malware Config

Signatures

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

932 4124 WerFault.exe IEXPLORE.EXE
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
ransomware

System Information Discovery
T1082

pid	pid_target	process	target process
932	4124	WerFault.exe	IEXPLORE.EXE

Modifies Internet Explorer settings 1 TTPs 21 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{EF44EA13-5C85-11EB-BEBD-6A3FD5463AB0} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3287683822"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3287683822"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\DOMStorage	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\DOMStorage\calendly.com\NumberOfSubdomains = "1"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30863506"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\DOMStorage\calendly.com	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30863506"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 17 IoCs

Processes:

WerFault.exe

pid	process
932	WerFault.exe
932	WerFault.exe
932	WerFault.exe
932	WerFault.exe
932	WerFault.exe
932	WerFault.exe
932	WerFault.exe
932	WerFault.exe
932	WerFault.exe
932	WerFault.exe
932	WerFault.exe
932	WerFault.exe
932	WerFault.exe
932	WerFault.exe
932	WerFault.exe
932	WerFault.exe
932	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 932 WerFault.exe
Token: SeBackupPrivilege 932 WerFault.exe
Token: SeDebugPrivilege 932 WerFault.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

iexplore.exe

pid process

4764 iexplore.exe
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

4764 iexplore.exe
4764 iexplore.exe
4124 IEXPLORE.EXE
4124 IEXPLORE.EXE

description	pid	process
Token: SeRestorePrivilege	932	WerFault.exe
Token: SeBackupPrivilege	932	WerFault.exe
Token: SeDebugPrivilege	932	WerFault.exe

pid	process
4764	iexplore.exe

pid	process
4764	iexplore.exe
4764	iexplore.exe
4124	IEXPLORE.EXE
4124	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

iexplore.exe

description	pid	process	target process
PID 4764 wrote to memory of 4124	4764	iexplore.exe	IEXPLORE.EXE
PID 4764 wrote to memory of 4124	4764	iexplore.exe	IEXPLORE.EXE
PID 4764 wrote to memory of 4124	4764	iexplore.exe	IEXPLORE.EXE

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" https://link.coboinc.com/ls/click?upn=fv6jI1K7SY9f4BfhpDrLedlQD5vRv5bp-2FYYFKBfpLvHTWlDPb3QBnB-2Fz-2F32ya1IQgryVbm54Re8vkTisx4i2PawH-2BM7KfgLZ6Z14ragNTS6fCoTjwGVnHrjeSzBDDFOFxWFDthGKqN-2FeH5sh7IFqS0QLrKM3O2yrilKF2-2F9b3KtuWePhKgGUTcB-2BDVoAuqT-2B-2B1Ys5kosCj2BNSAAAcSYP8IJ4Ansim1nlxqEvy-2Bi6xQ-3DWrJ3_lgwpNQji9ieIfmodYciNlUHfOVEqCtU9N7gh2XPE7BXrZwIMbpEPs3Gta9gLr2hrUrvltODLtI3-2Byt7BbuHIvu-2BVVM-2B-2BY-2BbC-2FspVozyvJcGKtk3BwR5Lti7faUG9O1wrHErU8TvOPzCL690uNyOB2MI2rQbKrSqGivPoTIWFf4IA26i6LXAqDJEKQ8mmxGlI8LZRNKGOgPHSQa4JIhhHlnOm35F4nMl6r-2BnOn7fR9QvwirxQ6L0GDFsBItKucAEh1pwYvEOBEMQbdkioRlx61HRdLV4UDEovwZ8-2FkoB-2BfXI-3D
1⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4764

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4764 CREDAT:82945 /prefetch:2
2⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:4124

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4124 -s 2900
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:932

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/932-3-0x0000000004DA0000-0x0000000004DA1000-memory.dmp

Filesize
4KB

Download
memory/4124-2-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads