umbral | 7e45b79940116f8a1de3a75f82e5209d0279d99479a24778e1590dd739b6ddf8

General

Target

dead.exe
Size

254KB
MD5

41a555bbc081356100cafdd006d3c096
SHA1

bf4f81ed8b698b9865098fccabff0bbbe3ca3255
SHA256

7e45b79940116f8a1de3a75f82e5209d0279d99479a24778e1590dd739b6ddf8
SHA512

1bc00d609264c523ab114e845a26edb9a611b927a583730880916f04efeee9c37c4529559a47854e422ab8530ab8edbb87754a755f50939c29e5a14e4b74efbc
SSDEEP

6144:+4oZo8KbOUtoAXAEeDh0x7axHU3FmRaW8ejI82V:9oZAOUo90ufIl

Score

10^/10

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/1592-1-0x000001E876440000-0x000001E876486000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
3912	WINWORD.EXE
3912	WINWORD.EXE

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
3912	WINWORD.EXE
3912	WINWORD.EXE
3912	WINWORD.EXE
3912	WINWORD.EXE
3912	WINWORD.EXE
3912	WINWORD.EXE
3912	WINWORD.EXE
3912	WINWORD.EXE

C:\Users\Admin\AppData\Local\Temp\dead.exe
"C:\Users\Admin\AppData\Local\Temp\dead.exe"
1⤵
PID:1592

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\Documents\UnpublishRestart.docx" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:3912

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Office\Recent\index.dat

Filesize
325B

MD5
fb6b84720afe4cdbb9cb985699ac1556

SHA1
749d076cd41e21b9cf50e18c0927cd3e950edb6e

SHA256
1057f8c144545ada96cd5dc2b446484497b4f19ce34eb659d09801bf188e094f

SHA512
0f02050e3656729756335c7ad7fcc523004bef75e99c06754189403dfceaef22110f22c7372b7ecb0319bd51ce47e6e635f1a9827dbddb1966393a74d35f841c

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\UProof\CUSTOM.DIC

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\fb3b0dbfee58fac8.customDestinations-ms

Filesize
2KB

MD5
d09c6c44514eef4f9b26c3b5d9bee89c

SHA1
f925949bb80977e81ed1676fde9dd8b33f38162e

SHA256
0dfac34c15cc35f11a85eda77c621ef5cdd1db1f6babf75f6a116f260445410f

SHA512
f7a6ab02870e2677faffafb41264154068701f2105c286b543697a4a73915b9bf377c9991079d4e8e3bf651b0b4bcb545b2590abecf9f408ddd191b66a32102a

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\fb3b0dbfee58fac8.customDestinations-ms

Filesize
2KB

MD5
a64a3dd9cf245c2da61147b569f4d1c7

SHA1
9bc78af7a4a5a3c0b40656440cc3bd4091fc6454

SHA256
f7bc9994fd498b15c10b63f2235d9e22cdac855d22f0703ebad326c53976702e

SHA512
75083515381e110e1cac7e9306c9cd26ff2892f3c903614ad30a19df7a4cb4ab8d29f0800290a3bf27c2ddb9d74bfad3c1d8735bdab8540a2564e87580aff2e0

Download Submit
memory/1592-0-0x00007FF921A73000-0x00007FF921A75000-memory.dmp

Filesize
8KB

Download
memory/1592-1-0x000001E876440000-0x000001E876486000-memory.dmp

Filesize
280KB

Download
memory/1592-2-0x00007FF921A70000-0x00007FF922531000-memory.dmp

Filesize
10.8MB

Download
memory/1592-3-0x00007FF921A70000-0x00007FF922531000-memory.dmp

Filesize
10.8MB

Download
memory/3912-10-0x00007FF8FD950000-0x00007FF8FD960000-memory.dmp

Filesize
64KB

Download
memory/3912-9-0x00007FF921860000-0x00007FF921AE3000-memory.dmp

Filesize
2.5MB

Download
memory/3912-8-0x00007FF8FFAF0000-0x00007FF8FFB00000-memory.dmp

Filesize
64KB

Download
memory/3912-11-0x00007FF921860000-0x00007FF921AE3000-memory.dmp

Filesize
2.5MB

Download
memory/3912-14-0x00007FF921860000-0x00007FF921AE3000-memory.dmp

Filesize
2.5MB

Download
memory/3912-13-0x00007FF921860000-0x00007FF921AE3000-memory.dmp

Filesize
2.5MB

Download
memory/3912-12-0x00007FF8FD950000-0x00007FF8FD960000-memory.dmp

Filesize
64KB

Download
memory/3912-15-0x00007FF921860000-0x00007FF921AE3000-memory.dmp

Filesize
2.5MB

Download
memory/3912-16-0x00007FF921860000-0x00007FF921AE3000-memory.dmp

Filesize
2.5MB

Download
memory/3912-7-0x00007FF8FFAF0000-0x00007FF8FFB00000-memory.dmp

Filesize
64KB

Download
memory/3912-5-0x00007FF8FFAF0000-0x00007FF8FFB00000-memory.dmp

Filesize
64KB

Download
memory/3912-6-0x00007FF8FFAF0000-0x00007FF8FFB00000-memory.dmp

Filesize
64KB

Download
memory/3912-4-0x00007FF8FFAF0000-0x00007FF8FFB00000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads