b54559a9ec4458ac16b0a4714201a8b6c6968b68c62a38d28fba1c2b908f981d

Analysis

max time kernel
146s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
01/12/2022, 19:05

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General

Target

b54559a9ec4458ac16b0a4714201a8b6c6968b68c62a38d28fba1c2b908f981d.exe
Size

146KB
MD5

ac91834a560f32091239091be536b1f5
SHA1

93be5f9e4765a52ae029460da608f474c4b2580e
SHA256

b54559a9ec4458ac16b0a4714201a8b6c6968b68c62a38d28fba1c2b908f981d
SHA512

f60a2c41025a9ea4d4dc89576c85d29bfa1c03978e4659d7223bad6018c0a7d292284b41292ee5bca52780113790ba06648faa04c345b37f9bf43ce09e82bbbb
SSDEEP

3072:6LeoO7ta1EzHOWdJBE673HCcO0/qjsSKutSwxk43z6NN:6LeoO7ta1ESWdv/3HCcOdjXSwT32N

Score

7^/10

persistence

Malware Config

Signatures

Loads dropped DLL 3 IoCs

pid	Process
4716	rundll32.exe
368	IEXPLORE.EXE
368	IEXPLORE.EXE

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bsexts = "rundll32.exe \"C:\\Users\\Admin\\AppData\\Roaming\\bsexts.dll\",Restore"	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 32 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3958163252"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31000458"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31000458"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31000458"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000000000001000000ffffffffffffffffffffffffffffffff3e0000003e000000c4040000a3020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "4039413826"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "4129413599"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3957539069"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31000458"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{14FF8633-737E-11ED-AECB-DAE60F07E07D} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "376887077"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1212	iexplore.exe
1212	iexplore.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
1212	iexplore.exe
1212	iexplore.exe
1660	IEXPLORE.EXE
1660	IEXPLORE.EXE
4716	rundll32.exe
1212	iexplore.exe
1212	iexplore.exe
368	IEXPLORE.EXE
368	IEXPLORE.EXE
4716	rundll32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3820 wrote to memory of 4716	3820	b54559a9ec4458ac16b0a4714201a8b6c6968b68c62a38d28fba1c2b908f981d.exe	78
PID 3820 wrote to memory of 4716	3820	b54559a9ec4458ac16b0a4714201a8b6c6968b68c62a38d28fba1c2b908f981d.exe	78
PID 3820 wrote to memory of 4716	3820	b54559a9ec4458ac16b0a4714201a8b6c6968b68c62a38d28fba1c2b908f981d.exe	78
PID 1212 wrote to memory of 1660	1212	iexplore.exe	89
PID 1212 wrote to memory of 1660	1212	iexplore.exe	89
PID 1212 wrote to memory of 1660	1212	iexplore.exe	89
PID 1212 wrote to memory of 368	1212	iexplore.exe	90
PID 1212 wrote to memory of 368	1212	iexplore.exe	90
PID 1212 wrote to memory of 368	1212	iexplore.exe	90

C:\Users\Admin\AppData\Local\Temp\b54559a9ec4458ac16b0a4714201a8b6c6968b68c62a38d28fba1c2b908f981d.exe
"C:\Users\Admin\AppData\Local\Temp\b54559a9ec4458ac16b0a4714201a8b6c6968b68c62a38d28fba1c2b908f981d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3820
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Roaming\bsexts.dll",Restore
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of SetWindowsHookEx
  PID:4716

C:\Program Files (x86)\Internet Explorer\ielowutil.exe
"C:\Program Files (x86)\Internet Explorer\ielowutil.exe" -CLSID:{0002DF01-0000-0000-C000-000000000046} -Embedding
1⤵
PID:1252

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
1⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1212
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1212 CREDAT:17410 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:1660
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1212 CREDAT:82948 /prefetch:2
  2⤵
  - Loads dropped DLL
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:368

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
471B

MD5
0ff2da8bfc83bec6bce38ba6a3f7bf58

SHA1
84c37df7bed08d69f040c289676735c49a9564eb

SHA256
91026f24711c435d99a44884c7239ed1265cd17c0259a6c5885f69e4309421ea

SHA512
78afdc44d7557b2f14444182085252e8456c91289511d6f2abfd1d7273d05baba9a94206d370add716b9fc30dc326a1a2e1c78f642e926759d962cf216c3a489

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
434B

MD5
bf3f4b0b7d763bcb08e6ff15ed60bc79

SHA1
5633e3319bb65e10e7ecd6677c135dcb1f6a21d3

SHA256
e06aac90ee24940534fba6f40431438654f07038908307c599811b23c98b9c2d

SHA512
4c828aa596656599a06601a58b081b1fc55f63257fc69bd9993ad3aeb0320eb3dd05f01bd42092de4ef89326fc3c153e7369dc0b977f0bcedef5bb6971118a5f

Download Submit
C:\Users\Admin\AppData\Roaming\bsexts.dll

Filesize
146KB

MD5
79b3a2a7683a5d0f36557d82201115f1

SHA1
a4a5e1f3935e2195e5448b302ae842ad0619f807

SHA256
a8761baccca6235d01a695851fbe647202c45e9a521e1e3435fe2b0d7f98f910

SHA512
b4ac464288296a2e56db4d4e62d052c9f17593b6c8401c8890a9beaea20e14610887c26e27f924539c146bb2a1678b3fd52be3df1e7b49182ea10c2236c3f151

Download Submit
C:\Users\Admin\AppData\Roaming\bsexts.dll

Filesize
146KB

MD5
79b3a2a7683a5d0f36557d82201115f1

SHA1
a4a5e1f3935e2195e5448b302ae842ad0619f807

SHA256
a8761baccca6235d01a695851fbe647202c45e9a521e1e3435fe2b0d7f98f910

SHA512
b4ac464288296a2e56db4d4e62d052c9f17593b6c8401c8890a9beaea20e14610887c26e27f924539c146bb2a1678b3fd52be3df1e7b49182ea10c2236c3f151

Download Submit
C:\Users\Admin\AppData\Roaming\bsexts.dll

Filesize
146KB

MD5
79b3a2a7683a5d0f36557d82201115f1

SHA1
a4a5e1f3935e2195e5448b302ae842ad0619f807

SHA256
a8761baccca6235d01a695851fbe647202c45e9a521e1e3435fe2b0d7f98f910

SHA512
b4ac464288296a2e56db4d4e62d052c9f17593b6c8401c8890a9beaea20e14610887c26e27f924539c146bb2a1678b3fd52be3df1e7b49182ea10c2236c3f151

Download Submit
C:\Users\Admin\AppData\Roaming\bsexts.dll

Filesize
146KB

MD5
79b3a2a7683a5d0f36557d82201115f1

SHA1
a4a5e1f3935e2195e5448b302ae842ad0619f807

SHA256
a8761baccca6235d01a695851fbe647202c45e9a521e1e3435fe2b0d7f98f910

SHA512
b4ac464288296a2e56db4d4e62d052c9f17593b6c8401c8890a9beaea20e14610887c26e27f924539c146bb2a1678b3fd52be3df1e7b49182ea10c2236c3f151

Download Submit
memory/3820-132-0x0000000002020000-0x0000000002047000-memory.dmp

Filesize
156KB

Download
memory/3820-137-0x0000000000550000-0x0000000000563000-memory.dmp

Filesize
76KB

Download
memory/3820-136-0x0000000010000000-0x0000000010027000-memory.dmp

Filesize
156KB

Download
memory/4716-141-0x00000000009E0000-0x0000000000A07000-memory.dmp

Filesize
156KB

Download
memory/4716-145-0x0000000010000000-0x0000000010027000-memory.dmp

Filesize
156KB

Download
memory/4716-146-0x00000000009B0000-0x00000000009C3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads