aurora | 2b91eb4d7882f0f0915130d670e1a39f43a43f5cb267975e283df0fddd9727b9

Analysis

max time kernel
82s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
30/01/2023, 17:36

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General

Target
e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad.exe
Size 470.0MB
Sample230130-v62dvsbd32
SHA256 e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad
MD5 3ee5dfca3eadc77f2bf61894d582cc66
SHA1 17f5f51c3439e54b22df194968977653104298d2
SHA512 c3ecef9bc6b51e430264a494bb3e9237ca539c7e3f1d4b3f18988e2953bee7cf46b06a2f24ca1535e8cbf514c6059e5c444c74dace355f845b08d8d7ad4bb239
SSDEEP 49152:LhK10rlzIwe6he+dM1ckuKqMm1kdCabcUwoTnfyL6gNLh65eDm0drmjKoSuMelqi:cirlzMIdHvbMCacUFKbNo8DmGOpMwqPq
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

aurora evasion spyware stealer themida trojan

Malware Config

Extracted

Family

aurora

45.15.156.210:8081

Signatures

Aurora
Aurora is a crypto wallet stealer written in Golang.
stealer aurora

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__	e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad.exe

Executes dropped EXE 1 IoCs

pid	Process
5116	KFEpnhGMdj.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\SystemBiosVersion	e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Themida packer 8 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/3612-132-0x0000000000450000-0x0000000000DC1000-memory.dmp	themida
behavioral2/memory/3612-133-0x0000000000450000-0x0000000000DC1000-memory.dmp	themida
behavioral2/memory/3612-134-0x0000000000450000-0x0000000000DC1000-memory.dmp	themida
behavioral2/memory/3612-135-0x0000000000450000-0x0000000000DC1000-memory.dmp	themida
behavioral2/memory/3612-137-0x0000000000450000-0x0000000000DC1000-memory.dmp	themida
behavioral2/memory/3612-138-0x0000000000450000-0x0000000000DC1000-memory.dmp	themida
behavioral2/memory/3612-139-0x0000000000450000-0x0000000000DC1000-memory.dmp	themida
behavioral2/memory/3612-145-0x0000000000450000-0x0000000000DC1000-memory.dmp	themida

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081

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	e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
3612	e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
3612	e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad.exe
3612	e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad.exe
1728	powershell.exe
1728	powershell.exe
5116	KFEpnhGMdj.exe
5116	KFEpnhGMdj.exe
5116	KFEpnhGMdj.exe
5116	KFEpnhGMdj.exe
5116	KFEpnhGMdj.exe
5116	KFEpnhGMdj.exe
5116	KFEpnhGMdj.exe
5116	KFEpnhGMdj.exe
5116	KFEpnhGMdj.exe
5116	KFEpnhGMdj.exe
5116	KFEpnhGMdj.exe
5116	KFEpnhGMdj.exe
5116	KFEpnhGMdj.exe
5116	KFEpnhGMdj.exe
5116	KFEpnhGMdj.exe
5116	KFEpnhGMdj.exe
5116	KFEpnhGMdj.exe
5116	KFEpnhGMdj.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1632	wmic.exe
Token: SeSecurityPrivilege	1632	wmic.exe
Token: SeTakeOwnershipPrivilege	1632	wmic.exe
Token: SeLoadDriverPrivilege	1632	wmic.exe
Token: SeSystemProfilePrivilege	1632	wmic.exe
Token: SeSystemtimePrivilege	1632	wmic.exe
Token: SeProfSingleProcessPrivilege	1632	wmic.exe
Token: SeIncBasePriorityPrivilege	1632	wmic.exe
Token: SeCreatePagefilePrivilege	1632	wmic.exe
Token: SeBackupPrivilege	1632	wmic.exe
Token: SeRestorePrivilege	1632	wmic.exe
Token: SeShutdownPrivilege	1632	wmic.exe
Token: SeDebugPrivilege	1632	wmic.exe
Token: SeSystemEnvironmentPrivilege	1632	wmic.exe
Token: SeRemoteShutdownPrivilege	1632	wmic.exe
Token: SeUndockPrivilege	1632	wmic.exe
Token: SeManageVolumePrivilege	1632	wmic.exe
Token: 33	1632	wmic.exe
Token: 34	1632	wmic.exe
Token: 35	1632	wmic.exe
Token: 36	1632	wmic.exe
Token: SeIncreaseQuotaPrivilege	1632	wmic.exe
Token: SeSecurityPrivilege	1632	wmic.exe
Token: SeTakeOwnershipPrivilege	1632	wmic.exe
Token: SeLoadDriverPrivilege	1632	wmic.exe
Token: SeSystemProfilePrivilege	1632	wmic.exe
Token: SeSystemtimePrivilege	1632	wmic.exe
Token: SeProfSingleProcessPrivilege	1632	wmic.exe
Token: SeIncBasePriorityPrivilege	1632	wmic.exe
Token: SeCreatePagefilePrivilege	1632	wmic.exe
Token: SeBackupPrivilege	1632	wmic.exe
Token: SeRestorePrivilege	1632	wmic.exe
Token: SeShutdownPrivilege	1632	wmic.exe
Token: SeDebugPrivilege	1632	wmic.exe
Token: SeSystemEnvironmentPrivilege	1632	wmic.exe
Token: SeRemoteShutdownPrivilege	1632	wmic.exe
Token: SeUndockPrivilege	1632	wmic.exe
Token: SeManageVolumePrivilege	1632	wmic.exe
Token: 33	1632	wmic.exe
Token: 34	1632	wmic.exe
Token: 35	1632	wmic.exe
Token: 36	1632	wmic.exe
Token: SeIncreaseQuotaPrivilege	3800	WMIC.exe
Token: SeSecurityPrivilege	3800	WMIC.exe
Token: SeTakeOwnershipPrivilege	3800	WMIC.exe
Token: SeLoadDriverPrivilege	3800	WMIC.exe
Token: SeSystemProfilePrivilege	3800	WMIC.exe
Token: SeSystemtimePrivilege	3800	WMIC.exe
Token: SeProfSingleProcessPrivilege	3800	WMIC.exe
Token: SeIncBasePriorityPrivilege	3800	WMIC.exe
Token: SeCreatePagefilePrivilege	3800	WMIC.exe
Token: SeBackupPrivilege	3800	WMIC.exe
Token: SeRestorePrivilege	3800	WMIC.exe
Token: SeShutdownPrivilege	3800	WMIC.exe
Token: SeDebugPrivilege	3800	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3800	WMIC.exe
Token: SeRemoteShutdownPrivilege	3800	WMIC.exe
Token: SeUndockPrivilege	3800	WMIC.exe
Token: SeManageVolumePrivilege	3800	WMIC.exe
Token: 33	3800	WMIC.exe
Token: 34	3800	WMIC.exe
Token: 35	3800	WMIC.exe
Token: 36	3800	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3800	WMIC.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3612 wrote to memory of 1632	3612	e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad.exe	81
PID 3612 wrote to memory of 1632	3612	e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad.exe	81
PID 3612 wrote to memory of 1632	3612	e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad.exe	81
PID 3612 wrote to memory of 1576	3612	e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad.exe	84
PID 3612 wrote to memory of 1576	3612	e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad.exe	84
PID 3612 wrote to memory of 1576	3612	e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad.exe	84
PID 1576 wrote to memory of 3800	1576	cmd.exe	86
PID 1576 wrote to memory of 3800	1576	cmd.exe	86
PID 1576 wrote to memory of 3800	1576	cmd.exe	86
PID 3612 wrote to memory of 4008	3612	e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad.exe	87
PID 3612 wrote to memory of 4008	3612	e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad.exe	87
PID 3612 wrote to memory of 4008	3612	e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad.exe	87
PID 4008 wrote to memory of 2524	4008	cmd.exe	89
PID 4008 wrote to memory of 2524	4008	cmd.exe	89
PID 4008 wrote to memory of 2524	4008	cmd.exe	89
PID 3612 wrote to memory of 1728	3612	e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad.exe	91
PID 3612 wrote to memory of 1728	3612	e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad.exe	91
PID 3612 wrote to memory of 1728	3612	e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad.exe	91
PID 1728 wrote to memory of 5116	1728	powershell.exe	95
PID 1728 wrote to memory of 5116	1728	powershell.exe	95
PID 1728 wrote to memory of 5116	1728	powershell.exe	95

C:\Users\Admin\AppData\Local\Temp\e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad.exe
"C:\Users\Admin\AppData\Local\Temp\e41b7fabc955a219901ab142402f9fb1c1c81e1923240fbe7ea1f9e4f57e46ad.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3612
- C:\Windows\SysWOW64\Wbem\wmic.exe
  wmic os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1632
- C:\Windows\SysWOW64\cmd.exe
  cmd /C "wmic path win32_VideoController get name"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1576
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic path win32_VideoController get name
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:3800
- C:\Windows\SysWOW64\cmd.exe
  cmd /C "wmic cpu get name"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4008
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic cpu get name
    3⤵
    PID:2524
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell "" "start-process C:\Users\Admin\AppData\Local\Temp\KFEpnhGMdj.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1728
- - C:\Users\Admin\AppData\Local\Temp\KFEpnhGMdj.exe
    "C:\Users\Admin\AppData\Local\Temp\KFEpnhGMdj.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    PID:5116

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

KFEpnhGMdj.exe

Path C:\Users\Admin\AppData\Local\Temp\KFEpnhGMdj.exe
Size 4.1MB
SHA256 0ea7ac01f7c8cb0ad3574688fd83265cceb7c3c16f89f29799b8be1b3a314a6a
MD5 fd3921d7f42c4a42115ce88d1c9fe031
SHA1 30d5b2cd633667a340047e1ff1ce44628555eba0
SHA512 8216ba2c9da3e6021f8f90c824a9da14632069477e508117948d841fd7dcc7fe28e1fb3d9cae854afe32db3ed46c6ba9cc49b3840ec875f66f3fa252ae11fb70
SSDEEP 98304:tqXluR38F6hFi21rrkhLmQcEO8IxwyG+5JMO1pT8d:tqXwRs4h4krkh6l8KzhZi
MD5 SHA1 SHA512 SSDEEP

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KFEpnhGMdj.exe

Path C:\Users\Admin\AppData\Local\Temp\KFEpnhGMdj.exe
Size 4.1MB
SHA256 0ea7ac01f7c8cb0ad3574688fd83265cceb7c3c16f89f29799b8be1b3a314a6a
MD5 fd3921d7f42c4a42115ce88d1c9fe031
SHA1 30d5b2cd633667a340047e1ff1ce44628555eba0
SHA512 8216ba2c9da3e6021f8f90c824a9da14632069477e508117948d841fd7dcc7fe28e1fb3d9cae854afe32db3ed46c6ba9cc49b3840ec875f66f3fa252ae11fb70
SSDEEP 98304:tqXluR38F6hFi21rrkhLmQcEO8IxwyG+5JMO1pT8d:tqXwRs4h4krkh6l8KzhZi
MD5 SHA1 SHA512 SSDEEP

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memory/1728-156-0x0000000006730000-0x0000000006752000-memory.dmp

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memory/1728-155-0x00000000066E0000-0x00000000066FA000-memory.dmp

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memory/1728-154-0x0000000007250000-0x00000000072E6000-memory.dmp

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memory/1728-153-0x0000000006200000-0x000000000621E000-memory.dmp

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memory/1728-148-0x0000000002920000-0x0000000002956000-memory.dmp

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memory/1728-157-0x00000000078A0000-0x0000000007E44000-memory.dmp

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memory/1728-152-0x0000000005B80000-0x0000000005BE6000-memory.dmp

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memory/1728-151-0x0000000005B10000-0x0000000005B76000-memory.dmp

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memory/1728-150-0x0000000005230000-0x0000000005252000-memory.dmp

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memory/1728-149-0x00000000053F0000-0x0000000005A18000-memory.dmp

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memory/3612-139-0x0000000000450000-0x0000000000DC1000-memory.dmp

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memory/3612-134-0x0000000000450000-0x0000000000DC1000-memory.dmp

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memory/3612-145-0x0000000000450000-0x0000000000DC1000-memory.dmp

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memory/3612-133-0x0000000000450000-0x0000000000DC1000-memory.dmp

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memory/3612-146-0x00000000771B0000-0x0000000077353000-memory.dmp

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memory/3612-132-0x0000000000450000-0x0000000000DC1000-memory.dmp

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memory/3612-138-0x0000000000450000-0x0000000000DC1000-memory.dmp

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memory/3612-137-0x0000000000450000-0x0000000000DC1000-memory.dmp

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memory/3612-136-0x00000000771B0000-0x0000000077353000-memory.dmp

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memory/3612-135-0x0000000000450000-0x0000000000DC1000-memory.dmp

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memory/5116-161-0x0000000000F80000-0x0000000001663000-memory.dmp

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