purelogstealer | 8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b

Analysis

max time kernel
146s
max time network
152s
platform
windows11-21h2_x64
resource
win11-20240709-en
resource tags

arch:x64arch:x86image:win11-20240709-enlocale:en-usos:windows11-21h2-x64system
submitted
27/07/2024, 07:30

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General

Target
8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe
Size 1.0MB
Sample240727-jb58savaml
SHA256 8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b
MD5 79bdfa5f39a2d43a55ea9beae9657da8
SHA1 02f168174595e3605d76e5780da4b91294d29feb
SHA512 4bb89f5dbbd1e11933879170dc9ec5d05eb0aa02326bf02eac8f119c74f047cfe5942e0eded0b70ab154f3b6c4cecde2dcc11a777298bae5168ef9914e7f927b
SSDEEP 24576:qZDleBE+/S/LpfNGl2HB/bbEbYV0eqYYTT0+3PFpzYjJHqG0ITD:+eBE+6jlNGl0vEbIq8uY0G0IX
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

purelogstealer smokeloader backdoor discovery stealer trojan

Malware Config

Signatures

PureLog Stealer
PureLog Stealer is an infostealer written in C#.
stealer purelogstealer

PureLog Stealer payload 1 IoCs

resource	yara_rule
behavioral2/memory/3048-1-0x0000000000300000-0x000000000040C000-memory.dmp	family_purelog_stealer

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3048 set thread context of 2092	3048	8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe	89

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe

Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe

Delays execution with timeout.exe 2 IoCs

evasion

pid	Process
2508	timeout.exe
3448	timeout.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3048	8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe
Token: SeDebugPrivilege	3048	8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3048 wrote to memory of 1876	3048	8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe	82
PID 3048 wrote to memory of 1876	3048	8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe	82
PID 3048 wrote to memory of 1876	3048	8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe	82
PID 1876 wrote to memory of 2508	1876	cmd.exe	84
PID 1876 wrote to memory of 2508	1876	cmd.exe	84
PID 1876 wrote to memory of 2508	1876	cmd.exe	84
PID 3048 wrote to memory of 4536	3048	8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe	86
PID 3048 wrote to memory of 4536	3048	8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe	86
PID 3048 wrote to memory of 4536	3048	8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe	86
PID 4536 wrote to memory of 3448	4536	cmd.exe	88
PID 4536 wrote to memory of 3448	4536	cmd.exe	88
PID 4536 wrote to memory of 3448	4536	cmd.exe	88
PID 3048 wrote to memory of 2092	3048	8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe	89
PID 3048 wrote to memory of 2092	3048	8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe	89
PID 3048 wrote to memory of 2092	3048	8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe	89
PID 3048 wrote to memory of 2092	3048	8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe	89
PID 3048 wrote to memory of 2092	3048	8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe	89
PID 3048 wrote to memory of 2092	3048	8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe	89

C:\Users\Admin\AppData\Local\Temp\8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe
"C:\Users\Admin\AppData\Local\Temp\8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3048
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout 10
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1876
- - C:\Windows\SysWOW64\timeout.exe
    timeout 10
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2508
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout 10
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4536
- - C:\Windows\SysWOW64\timeout.exe
    timeout 10
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3448
- C:\Users\Admin\AppData\Local\Temp\8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe
  "C:\Users\Admin\AppData\Local\Temp\8bac155a33708bce44afaa1c38363701ac89743577edef0b31105cde0eb7153b.exe"
  2⤵
  - Checks SCSI registry key(s)
  PID:2092

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2092-1053-0x0000000000400000-0x000000000040B000-memory.dmp

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memory/3048-0-0x0000000074CFE000-0x0000000074CFF000-memory.dmp

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memory/3048-1-0x0000000000300000-0x000000000040C000-memory.dmp

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memory/3048-2-0x0000000074CF0000-0x00000000754A1000-memory.dmp

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memory/3048-3-0x0000000004D00000-0x0000000004DD0000-memory.dmp

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memory/3048-4-0x0000000005D70000-0x0000000005E4C000-memory.dmp

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memory/3048-5-0x0000000074CFE000-0x0000000074CFF000-memory.dmp

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memory/3048-25-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-7-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-71-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-48-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-34-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-69-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-66-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-64-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-109-0x0000000074CF0000-0x00000000754A1000-memory.dmp

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memory/3048-187-0x0000000074CF0000-0x00000000754A1000-memory.dmp

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memory/3048-63-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-60-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-58-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-56-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-54-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-52-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-50-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-46-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-44-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-42-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-40-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-38-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-36-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-33-0x0000000074CF0000-0x00000000754A1000-memory.dmp

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memory/3048-31-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-29-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-27-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-23-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-21-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-19-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-17-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-15-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-13-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-12-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-9-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-6-0x0000000005D70000-0x0000000005E46000-memory.dmp

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memory/3048-1045-0x0000000074CF0000-0x00000000754A1000-memory.dmp

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memory/3048-1046-0x0000000006010000-0x000000000606C000-memory.dmp

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memory/3048-1047-0x0000000074CF0000-0x00000000754A1000-memory.dmp

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memory/3048-1048-0x0000000006070000-0x00000000060BC000-memory.dmp

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memory/3048-1050-0x0000000006530000-0x0000000006584000-memory.dmp

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memory/3048-1049-0x00000000073B0000-0x0000000007956000-memory.dmp

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memory/3048-1054-0x0000000074CF0000-0x00000000754A1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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