cb5d39fc99ebffb2e137104b493ca9102630698a49e6a1a35d0f7a84b01244f6

General

Target

maybeice.xlsb
Size

80KB
MD5

79f07a91462a30ffd08e5d5df0b818f4
SHA1

c257b63ed7184c9da9c59318f927a9c948d88261
SHA256

547477332bd0dde997b697e6f74110ff4af5b41ad0d71dee3d3f51d4c3db3bc5
SHA512

f87242140303ff78e38c642af7416deb078781af3864f7e52b5867f8a792437d48478d169ec291947290515d9d5ba92b8dd92821dcbbaa049e0b66f87ff322a2

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

Signatures

Process spawned unexpected child process 2 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

certutil.exerundll32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1948	1036	certutil.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1048	1036	rundll32.exe	EXCEL.EXE

Loads dropped DLL 4 IoCs

Processes:

rundll32.exe

pid process

1048 rundll32.exe
1048 rundll32.exe
1048 rundll32.exe
1048 rundll32.exe
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

EXCEL.EXE

description ioc process

Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE

pid	process
1048	rundll32.exe
1048	rundll32.exe
1048	rundll32.exe
1048	rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1036 EXCEL.EXE
Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

EXCEL.EXE

pid process

1036 EXCEL.EXE
1036 EXCEL.EXE
1036 EXCEL.EXE
1036 EXCEL.EXE
1036 EXCEL.EXE

pid	process
1036	EXCEL.EXE

pid	process
1036	EXCEL.EXE
1036	EXCEL.EXE
1036	EXCEL.EXE
1036	EXCEL.EXE
1036	EXCEL.EXE

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1036 wrote to memory of 1948	1036	EXCEL.EXE	certutil.exe
PID 1036 wrote to memory of 1948	1036	EXCEL.EXE	certutil.exe
PID 1036 wrote to memory of 1948	1036	EXCEL.EXE	certutil.exe
PID 1036 wrote to memory of 1948	1036	EXCEL.EXE	certutil.exe
PID 1036 wrote to memory of 1048	1036	EXCEL.EXE	rundll32.exe
PID 1036 wrote to memory of 1048	1036	EXCEL.EXE	rundll32.exe
PID 1036 wrote to memory of 1048	1036	EXCEL.EXE	rundll32.exe
PID 1036 wrote to memory of 1048	1036	EXCEL.EXE	rundll32.exe
PID 1036 wrote to memory of 1048	1036	EXCEL.EXE	rundll32.exe
PID 1036 wrote to memory of 1048	1036	EXCEL.EXE	rundll32.exe
PID 1036 wrote to memory of 1048	1036	EXCEL.EXE	rundll32.exe

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\maybeice.xlsb
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1036

C:\Windows\SysWOW64\certutil.exe
"C:\Windows\System32\certutil.exe" -decodehex C:\Users\Public\2176.txt C:\Users\Public\2176.dll
2⤵
- Process spawned unexpected child process
PID:1948

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\Users\Public\2176.dll,D
2⤵
- Process spawned unexpected child process
- Loads dropped DLL
PID:1048

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Public\2176.dll
MD5
09aa345445d3b9770f913be946a56738

SHA1
2c745814ef7f3e1cefe6e468532422c5d0071aeb

SHA256
37998fece4feb0a46bed59ef538fbfc61c457fa0187e42643e4a42aec94dbf77

SHA512
054ed6d18943f6b581d39aef83b57179b1091344bf60ca7cdd060b10e62b693087076d77433353503685be96d94a19dde84c20c4db0d9c025280d90c716bb2f9

Download Submit
C:\Users\Public\2176.txt
MD5
652620d75f7d14f0b5fb7adaef835c11

SHA1
be88d1a4be7db5170f26cb3068783cb78ad92cf4

SHA256
c8f9a6c0d639d9dbe1c432ca1415fa1129f7c1cda3e8febb4dc961763039a774

SHA512
7ee326b9621285e412811cd01e829e789a89d8916cd39bb45eed92b82615e8595e704c30cfc674778f929249b387a510e0996c105e81eec56670871ca9da7f79

Download Submit
\Users\Public\2176.dll
MD5
09aa345445d3b9770f913be946a56738

SHA1
2c745814ef7f3e1cefe6e468532422c5d0071aeb

SHA256
37998fece4feb0a46bed59ef538fbfc61c457fa0187e42643e4a42aec94dbf77

SHA512
054ed6d18943f6b581d39aef83b57179b1091344bf60ca7cdd060b10e62b693087076d77433353503685be96d94a19dde84c20c4db0d9c025280d90c716bb2f9

Download Submit
\Users\Public\2176.dll
MD5
09aa345445d3b9770f913be946a56738

SHA1
2c745814ef7f3e1cefe6e468532422c5d0071aeb

SHA256
37998fece4feb0a46bed59ef538fbfc61c457fa0187e42643e4a42aec94dbf77

SHA512
054ed6d18943f6b581d39aef83b57179b1091344bf60ca7cdd060b10e62b693087076d77433353503685be96d94a19dde84c20c4db0d9c025280d90c716bb2f9

Download Submit
\Users\Public\2176.dll
MD5
09aa345445d3b9770f913be946a56738

SHA1
2c745814ef7f3e1cefe6e468532422c5d0071aeb

SHA256
37998fece4feb0a46bed59ef538fbfc61c457fa0187e42643e4a42aec94dbf77

SHA512
054ed6d18943f6b581d39aef83b57179b1091344bf60ca7cdd060b10e62b693087076d77433353503685be96d94a19dde84c20c4db0d9c025280d90c716bb2f9

Download Submit
\Users\Public\2176.dll
MD5
09aa345445d3b9770f913be946a56738

SHA1
2c745814ef7f3e1cefe6e468532422c5d0071aeb

SHA256
37998fece4feb0a46bed59ef538fbfc61c457fa0187e42643e4a42aec94dbf77

SHA512
054ed6d18943f6b581d39aef83b57179b1091344bf60ca7cdd060b10e62b693087076d77433353503685be96d94a19dde84c20c4db0d9c025280d90c716bb2f9

Download Submit
memory/1048-5-0x0000000000000000-mapping.dmp

Download
memory/1152-2-0x000007FEF6550000-0x000007FEF67CA000-memory.dmp

Filesize
2.5MB

Download
memory/1948-3-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads