80a8fee2e4d5909bf2dbe60be97d7ea44bbc5d9e3745caf83a06653287ea229c

General

Target

Sigmanly_80a8fee2e4d5909bf2dbe60be97d7ea44bbc5d9e3745caf83a06653287ea229c.exe
Size

5.9MB
MD5

b50d06fdc5a763244d12f5d2e7c1ee3c
SHA1

3c809781c51c973199894746f7dab09ca9c6a416
SHA256

80a8fee2e4d5909bf2dbe60be97d7ea44bbc5d9e3745caf83a06653287ea229c
SHA512

eb52ddb0c3d66bfae4e48b96d97c2f95eebbc9e4832952fbd52926d73af29dab3766231fd03946ffb6f348c7d3f9dfe3b09754c038a48e6358d8cba689a0ea64
SSDEEP

98304:LkkKwG21Ovtlc2jHCyHPmfttKL8K1mTMKd3VU0rfBKUmlShrxlxrWVpcb:LPKbHlc22yvmVtkx1nC1UVlSlxrWs

Score

9^/10

discovery evasion

Malware Config

Signatures

Enumerates VirtualBox registry keys 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxSF	Set-up.exe

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	Sigmanly_80a8fee2e4d5909bf2dbe60be97d7ea44bbc5d9e3745caf83a06653287ea229c.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Sigmanly_80a8fee2e4d5909bf2dbe60be97d7ea44bbc5d9e3745caf83a06653287ea229c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Sigmanly_80a8fee2e4d5909bf2dbe60be97d7ea44bbc5d9e3745caf83a06653287ea229c.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	Sigmanly_80a8fee2e4d5909bf2dbe60be97d7ea44bbc5d9e3745caf83a06653287ea229c.exe

Executes dropped EXE 2 IoCs

pid	Process
1480	LummaC2.exe
2528	Set-up.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Wine	Sigmanly_80a8fee2e4d5909bf2dbe60be97d7ea44bbc5d9e3745caf83a06653287ea229c.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
748	Sigmanly_80a8fee2e4d5909bf2dbe60be97d7ea44bbc5d9e3745caf83a06653287ea229c.exe

Embeds OpenSSL 1 IoCs

Embeds OpenSSL, may be used to circumvent TLS interception.

resource	yara_rule
behavioral2/files/0x000a000000023b80-15.dat	embeds_openssl

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1192	2528	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Sigmanly_80a8fee2e4d5909bf2dbe60be97d7ea44bbc5d9e3745caf83a06653287ea229c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	LummaC2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Set-up.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
748	Sigmanly_80a8fee2e4d5909bf2dbe60be97d7ea44bbc5d9e3745caf83a06653287ea229c.exe
748	Sigmanly_80a8fee2e4d5909bf2dbe60be97d7ea44bbc5d9e3745caf83a06653287ea229c.exe
2528	Set-up.exe
2528	Set-up.exe
2528	Set-up.exe
2528	Set-up.exe
2528	Set-up.exe
2528	Set-up.exe
2528	Set-up.exe
2528	Set-up.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 748 wrote to memory of 1480	748	Sigmanly_80a8fee2e4d5909bf2dbe60be97d7ea44bbc5d9e3745caf83a06653287ea229c.exe	82
PID 748 wrote to memory of 1480	748	Sigmanly_80a8fee2e4d5909bf2dbe60be97d7ea44bbc5d9e3745caf83a06653287ea229c.exe	82
PID 748 wrote to memory of 1480	748	Sigmanly_80a8fee2e4d5909bf2dbe60be97d7ea44bbc5d9e3745caf83a06653287ea229c.exe	82
PID 748 wrote to memory of 2528	748	Sigmanly_80a8fee2e4d5909bf2dbe60be97d7ea44bbc5d9e3745caf83a06653287ea229c.exe	83
PID 748 wrote to memory of 2528	748	Sigmanly_80a8fee2e4d5909bf2dbe60be97d7ea44bbc5d9e3745caf83a06653287ea229c.exe	83
PID 748 wrote to memory of 2528	748	Sigmanly_80a8fee2e4d5909bf2dbe60be97d7ea44bbc5d9e3745caf83a06653287ea229c.exe	83

C:\Users\Admin\AppData\Local\Temp\Sigmanly_80a8fee2e4d5909bf2dbe60be97d7ea44bbc5d9e3745caf83a06653287ea229c.exe
"C:\Users\Admin\AppData\Local\Temp\Sigmanly_80a8fee2e4d5909bf2dbe60be97d7ea44bbc5d9e3745caf83a06653287ea229c.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:748
- C:\Users\Admin\AppData\Local\Temp\LummaC2.exe
  "C:\Users\Admin\AppData\Local\Temp\LummaC2.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1480
- C:\Users\Admin\AppData\Local\Temp\Set-up.exe
  "C:\Users\Admin\AppData\Local\Temp\Set-up.exe"
  2⤵
  - Enumerates VirtualBox registry keys
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2528
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2528 -s 916
    3⤵
    - Program crash
    PID:1192

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2528 -ip 2528
1⤵
PID:4496

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

3

T1497

Credential Access

Discovery

Query Registry

6

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Virtualization/Sandbox Evasion

3

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\LummaC2.exe

Filesize
292KB

MD5
607000c61fcb5a41b8d511b5ed7625d4

SHA1
dfaa2bfea8a51b14ac089bb6a39f037e769169d1

SHA256
c9831759e15b3a52238c03d0d51db9de0c1a6c7a61a51de72c5869061172e9db

SHA512
64940f02635ccbc2dcd42449c0c435a6a50bd00fa93d6e2e161371cdc766103ef858ccbaae4497a75576121ea7bc25ba54a9064748f9d6676989a4c9f8b50e58

Download Submit
C:\Users\Admin\AppData\Local\Temp\Set-up.exe

Filesize
6.5MB

MD5
2a99036c44c996cedeb2042d389fe23c

SHA1
4f1e624bcc030e44722de26b72c8156bf57e14e8

SHA256
73aa5ee19f0ea048dcff2f44d6fd5ac41c13e2d7e61371459e756836f72cad43

SHA512
6907cd0e47293c8c96345ed00f2f3fa2241ce1671ee73a599837857bfb39f6c7e373aad843cc78fb550d2db10bdfe066a021cec4c8a49aecdf06a7e71edadedd

Download Submit
memory/748-0-0x0000000000060000-0x0000000000B92000-memory.dmp

Filesize
11.2MB

Download
memory/748-1-0x0000000000060000-0x0000000000B92000-memory.dmp

Filesize
11.2MB

Download
memory/748-2-0x0000000000060000-0x0000000000B92000-memory.dmp

Filesize
11.2MB

Download
memory/748-21-0x0000000000060000-0x0000000000B92000-memory.dmp

Filesize
11.2MB

Download
memory/2528-22-0x0000000000760000-0x0000000000DF0000-memory.dmp

Filesize
6.6MB

Download
memory/2528-25-0x0000000000760000-0x0000000000DF0000-memory.dmp

Filesize
6.6MB

Download
memory/2528-29-0x0000000000760000-0x0000000000DF0000-memory.dmp

Filesize
6.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads