83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b

General

Target

83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exe
Size

958KB
MD5

a469bc3854c73406e2c2a533cf60de93
SHA1

f3e4070d2f091e44068349e07ffe5532ac1b80b8
SHA256

83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b
SHA512

02146bd2d7c094e4470e330028c8e9a06d755f0d85aab6eca3426486eb3f478571fbc5bf74489b7439d299f96d438a3d558eacddee82869246dff00c05ac1b3b

Score

9^/10

Malware Config

Signatures

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/380-143-0x0000000002B20000-0x0000000002BB0000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/380-143-0x0000000002B20000-0x0000000002BB0000-memory.dmp	WebBrowserPassView

Nirsoft 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/380-143-0x0000000002B20000-0x0000000002BB0000-memory.dmp	Nirsoft

Executes dropped EXE 2 IoCs

Processes:

Windows Update.exeWindows Update.exe

pid process

1672 Windows Update.exe
3736 Windows Update.exe

pid	process
1672	Windows Update.exe
3736	Windows Update.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

Processes:

83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Control Panel\International\Geo\Nation	83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exeWindows Update.exe

description	pid	process	target process
PID 2392 set thread context of 380	2392	83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exe	83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exe
PID 1672 set thread context of 3736	1672	Windows Update.exe	Windows Update.exe

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

System Information Discovery
T1082
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exeWindows Update.exe

pid process

2392 83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exe
1672 Windows Update.exe

pid	process
2392	83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exe
1672	Windows Update.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exe83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exeWindows Update.exe

description	pid	process	target process
PID 2392 wrote to memory of 380	2392	83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exe	83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exe
PID 2392 wrote to memory of 380	2392	83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exe	83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exe
PID 2392 wrote to memory of 380	2392	83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exe	83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exe
PID 380 wrote to memory of 1672	380	83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exe	Windows Update.exe
PID 380 wrote to memory of 1672	380	83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exe	Windows Update.exe
PID 380 wrote to memory of 1672	380	83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exe	Windows Update.exe
PID 1672 wrote to memory of 3736	1672	Windows Update.exe	Windows Update.exe
PID 1672 wrote to memory of 3736	1672	Windows Update.exe	Windows Update.exe
PID 1672 wrote to memory of 3736	1672	Windows Update.exe	Windows Update.exe

C:\Users\Admin\AppData\Local\Temp\83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exe
"C:\Users\Admin\AppData\Local\Temp\83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2392

C:\Users\Admin\AppData\Local\Temp\83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exe
C:\Users\Admin\AppData\Local\Temp\83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b.exe"
2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:380

C:\Users\Admin\AppData\Roaming\Windows Update.exe
"C:\Users\Admin\AppData\Roaming\Windows Update.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1672

C:\Users\Admin\AppData\Roaming\Windows Update.exe
C:\Users\Admin\AppData\Roaming\Windows Update.exe"
4⤵
- Executes dropped EXE
PID:3736

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Windows Update.exe
Filesize
958KB

MD5
a469bc3854c73406e2c2a533cf60de93

SHA1
f3e4070d2f091e44068349e07ffe5532ac1b80b8

SHA256
83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b

SHA512
02146bd2d7c094e4470e330028c8e9a06d755f0d85aab6eca3426486eb3f478571fbc5bf74489b7439d299f96d438a3d558eacddee82869246dff00c05ac1b3b

Download Submit
C:\Users\Admin\AppData\Roaming\Windows Update.exe
Filesize
958KB

MD5
a469bc3854c73406e2c2a533cf60de93

SHA1
f3e4070d2f091e44068349e07ffe5532ac1b80b8

SHA256
83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b

SHA512
02146bd2d7c094e4470e330028c8e9a06d755f0d85aab6eca3426486eb3f478571fbc5bf74489b7439d299f96d438a3d558eacddee82869246dff00c05ac1b3b

Download Submit
C:\Users\Admin\AppData\Roaming\Windows Update.exe
Filesize
958KB

MD5
a469bc3854c73406e2c2a533cf60de93

SHA1
f3e4070d2f091e44068349e07ffe5532ac1b80b8

SHA256
83e2a7ad036af18cfadc0a723ce688507f2079f05f20ef3678708f80322c6d5b

SHA512
02146bd2d7c094e4470e330028c8e9a06d755f0d85aab6eca3426486eb3f478571fbc5bf74489b7439d299f96d438a3d558eacddee82869246dff00c05ac1b3b

Download Submit
memory/380-148-0x0000000074630000-0x0000000074BE1000-memory.dmp

Filesize
5.7MB

Download
memory/380-155-0x0000000074630000-0x0000000074BE1000-memory.dmp

Filesize
5.7MB

Download
memory/380-143-0x0000000002B20000-0x0000000002BB0000-memory.dmp

Filesize
576KB

Download
memory/380-146-0x0000000074630000-0x0000000074BE1000-memory.dmp

Filesize
5.7MB

Download
memory/380-147-0x0000000076FC0000-0x0000000077163000-memory.dmp

Filesize
1.6MB

Download
memory/380-135-0x0000000000000000-mapping.dmp

Download
memory/380-139-0x0000000000400000-0x0000000000477000-memory.dmp

Filesize
476KB

Download
memory/380-142-0x0000000076FC0000-0x0000000077163000-memory.dmp

Filesize
1.6MB

Download
memory/380-154-0x0000000076FC0000-0x0000000077163000-memory.dmp

Filesize
1.6MB

Download
memory/1672-149-0x0000000000000000-mapping.dmp

Download
memory/1672-158-0x0000000076FC0000-0x0000000077163000-memory.dmp

Filesize
1.6MB

Download
memory/2392-136-0x0000000076FC0000-0x0000000077163000-memory.dmp

Filesize
1.6MB

Download
memory/2392-134-0x00000000022D0000-0x00000000022D7000-memory.dmp

Filesize
28KB

Download
memory/3736-156-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads