437f639d05da27e1909877e3f8c39f70ee5d525a8be7c631e69f4141db287ab6

Analysis

max time kernel
117s
max time network
133s
platform
windows7_x64
resource
win7-en-20211208
submitted
23/02/2022, 12:56

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General

Target
PRAVDA.exe
Size 4.7MB
Sample220223-p6cslsbebl
SHA256 437f639d05da27e1909877e3f8c39f70ee5d525a8be7c631e69f4141db287ab6
MD5 4c121ed03f8af0def67bfdd8dfe542d8
SHA1 3d5f98311fbad255078b5377810b14d099e0ddf9
SHA512 1a678e6d8b0fa17033e3be623269ff93438436e26f9bbceea2f54711bdddaaeb52ab87097ee5e4287bd650e577104204019caf3adb15292d68314c1ca95752ac
MD5 SHA1 SHA512

Score

9^/10

evasion themida trojan

Malware Config

Signatures

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

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

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\SystemBiosVersion	PRAVDA.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	PRAVDA.exe

Themida packer 5 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/900-61-0x000000013F940000-0x0000000140545000-memory.dmp	themida
behavioral1/memory/900-63-0x000000013F940000-0x0000000140545000-memory.dmp	themida
behavioral1/memory/900-64-0x000000013F940000-0x0000000140545000-memory.dmp	themida
behavioral1/memory/900-66-0x000000013F940000-0x0000000140545000-memory.dmp	themida
behavioral1/memory/900-67-0x000000013F940000-0x0000000140545000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	PRAVDA.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
900	PRAVDA.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\ha.txt	PRAVDA.exe

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

System Information Discovery
T1082

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436	PRAVDA.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436\Blob = 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	PRAVDA.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 900 wrote to memory of 1092	900	PRAVDA.exe	29
PID 900 wrote to memory of 1092	900	PRAVDA.exe	29
PID 900 wrote to memory of 1092	900	PRAVDA.exe	29

C:\Users\Admin\AppData\Local\Temp\PRAVDA.exe
"C:\Users\Admin\AppData\Local\Temp\PRAVDA.exe"
1⤵
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Modifies system certificate store
- Suspicious use of WriteProcessMemory
PID:900
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\Aurora
  2⤵
  PID:1092

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

T1130

Modify Registry

T1112

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/900-55-0x000007FEFD883000-0x000007FEFD884000-memory.dmp

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memory/900-56-0x000007FEFD883000-0x000007FEFD884000-memory.dmp

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memory/900-57-0x000007FEFD884000-0x000007FEFD885000-memory.dmp

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memory/900-58-0x000007FEFD883000-0x000007FEFD884000-memory.dmp

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memory/900-59-0x00000000003F0000-0x00000000003F1000-memory.dmp

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memory/900-60-0x0000000077A50000-0x0000000077A52000-memory.dmp

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memory/900-62-0x000007FE80010000-0x000007FE80011000-memory.dmp

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memory/900-61-0x000000013F940000-0x0000000140545000-memory.dmp

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memory/900-63-0x000000013F940000-0x0000000140545000-memory.dmp

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memory/900-64-0x000000013F940000-0x0000000140545000-memory.dmp

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memory/900-65-0x000007FEF5AB3000-0x000007FEF5AB4000-memory.dmp

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memory/900-66-0x000000013F940000-0x0000000140545000-memory.dmp

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memory/900-67-0x000000013F940000-0x0000000140545000-memory.dmp

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memory/900-68-0x000000001AE80000-0x000000001AE82000-memory.dmp

Download

memory/900-69-0x000000001AE82000-0x000000001AE83000-memory.dmp

Download

memory/900-70-0x000000001AE87000-0x000000001AEA6000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads