e3a5783edd9a923065331f0b74b91e9f47579632f5166dd7bb1fc7200ade7fd8

Analysis

max time kernel
91s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
04/12/2022, 08:37

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General

Target

e3a5783edd9a923065331f0b74b91e9f47579632f5166dd7bb1fc7200ade7fd8.dll
Size

99KB
MD5

8fb123e41ea48cbdd3190a6000257410
SHA1

f545e6df467aad8716aa50c40ab595f20a402045
SHA256

e3a5783edd9a923065331f0b74b91e9f47579632f5166dd7bb1fc7200ade7fd8
SHA512

55098f588c593581742c77aa2fbb4be7b618d1e75e24978b5f30d89fc728e7d9458d6000557795da21cffeedc93d75e7882e797d9c2db6fa00a1feb8227d90c4
SSDEEP

1536:K2bf4GEqXxaAP2KJeIeVHVLTuWzvilSRm/km+BDN7MJ2NB7LeEdmNjzr/NTXN:jglBAP2Z/uWuErm+FjNB7LPY9z5rN

Score

10^/10

evasion upx

Malware Config

Signatures

Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "0"	rundll32.exe

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1076-61-0x0000000010000000-0x000000001001A000-memory.dmp	upx

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\V:	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Toolbar	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Toolbar\Locked = "1"	explorer.exe

Modifies registry class 28 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 19002f433a5c000000000000000000000000000000000000000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\MRUListEx = ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f50e04fd020ea3a6910a2d808002b30309d0000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\NodeSlot = "1"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_Classes\Local Settings	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0 = 52003100000000000c55cb70122041707044617461003c0008000400efbe0c55cb700c55cb702a000000ed0100000000020000000000000000000000000000004100700070004400610074006100000016000000	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic"	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 74003100000000000c55cb701100557365727300600008000400efbeee3a851a0c55cb702a000000e601000000000100000000000000000036000000000055007300650072007300000040007300680065006c006c00330032002e0064006c006c002c002d0032003100380031003300000014000000	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 4c003100000000000c55117c100041646d696e00380008000400efbe0c55cb700c55117c2a00000030000000000004000000000000000000000000000000410064006d0069006e00000014000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\KnownFolderDerivedFolderType = "{57807898-8C4F-4462-BB63-71042380B109}"	explorer.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1076	rundll32.exe
1076	rundll32.exe
1076	rundll32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1076	rundll32.exe
Token: SeShutdownPrivilege	1296	Explorer.EXE
Token: SeShutdownPrivilege	1296	Explorer.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
1296	Explorer.EXE
1296	Explorer.EXE
1296	Explorer.EXE
1296	Explorer.EXE

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1296	Explorer.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 864 wrote to memory of 1076	864	rundll32.exe	27
PID 864 wrote to memory of 1076	864	rundll32.exe	27
PID 864 wrote to memory of 1076	864	rundll32.exe	27
PID 864 wrote to memory of 1076	864	rundll32.exe	27
PID 864 wrote to memory of 1076	864	rundll32.exe	27
PID 864 wrote to memory of 1076	864	rundll32.exe	27
PID 864 wrote to memory of 1076	864	rundll32.exe	27
PID 1076 wrote to memory of 1296	1076	rundll32.exe	15
PID 1076 wrote to memory of 1436	1076	rundll32.exe	28
PID 1076 wrote to memory of 1436	1076	rundll32.exe	28
PID 1076 wrote to memory of 1436	1076	rundll32.exe	28
PID 1076 wrote to memory of 1436	1076	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e3a5783edd9a923065331f0b74b91e9f47579632f5166dd7bb1fc7200ade7fd8.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:864
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e3a5783edd9a923065331f0b74b91e9f47579632f5166dd7bb1fc7200ade7fd8.dll,#1
  2⤵
  - Modifies visibility of file extensions in Explorer
  - Enumerates connected drives
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1076
- - C:\Windows\SysWOW64\explorer.exe
    explorer C:\Users\Admin\AppData
    3⤵
    PID:1436

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1296

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Modifies Internet Explorer settings
- Modifies registry class
PID:1764

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1076-55-0x0000000075141000-0x0000000075143000-memory.dmp

Filesize
8KB

Download
memory/1076-59-0x00000000000C0000-0x00000000000E1000-memory.dmp

Filesize
132KB

Download
memory/1076-61-0x0000000010000000-0x000000001001A000-memory.dmp

Filesize
104KB

Download
memory/1076-62-0x00000000000C0000-0x00000000000E1000-memory.dmp

Filesize
132KB

Download
memory/1436-65-0x00000000747E1000-0x00000000747E3000-memory.dmp

Filesize
8KB

Download
memory/1764-66-0x000007FEFB931000-0x000007FEFB933000-memory.dmp

Filesize
8KB

Download
memory/1764-67-0x00000000039C0000-0x00000000039D0000-memory.dmp

Filesize
64KB

Download