0f8ddf8788968309f3e65dd0f2547e8c7b13c7ae2afaba17ae2e3e4edd8120c8

Analysis

max time kernel
141s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
30/09/2024, 07:53

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General

Target

microsoft-teams-24231.512.3106.6573-installer_GREH-c1.exe
Size

1.7MB
MD5

6766745ad3b385fc232e44d92dd29541
SHA1

d46d57d2cbc6c26e1202082c6c1867eb9c3dfce7
SHA256

0f8ddf8788968309f3e65dd0f2547e8c7b13c7ae2afaba17ae2e3e4edd8120c8
SHA512

72cabb27c66b8687a367a72b74de289686355a5e8f7267d65301304406c4dfd1970c567e8352c7178bb2993b1dbecec71c587de61f10c9b5df809797784232cb
SSDEEP

24576:+7FUDowAyrTVE3U5F/GLuHhCLaAcVOSRxmGjrG3asUhTfG2IetmpncfR4Bp/x8sn:+BuZrEUJVbpjrdhTO26eZ4BppV8A

Score

4^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4476	microsoft-teams-24231.512.3106.6573-installer_GREH-c1.tmp

System Location Discovery: System Language Discovery 1 TTPs 2 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	microsoft-teams-24231.512.3106.6573-installer_GREH-c1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	microsoft-teams-24231.512.3106.6573-installer_GREH-c1.tmp

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	microsoft-teams-24231.512.3106.6573-installer_GREH-c1.tmp
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\	microsoft-teams-24231.512.3106.6573-installer_GREH-c1.tmp

Script User-Agent 1 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	19	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4728 wrote to memory of 4476	4728	microsoft-teams-24231.512.3106.6573-installer_GREH-c1.exe	84
PID 4728 wrote to memory of 4476	4728	microsoft-teams-24231.512.3106.6573-installer_GREH-c1.exe	84
PID 4728 wrote to memory of 4476	4728	microsoft-teams-24231.512.3106.6573-installer_GREH-c1.exe	84

C:\Users\Admin\AppData\Local\Temp\microsoft-teams-24231.512.3106.6573-installer_GREH-c1.exe
"C:\Users\Admin\AppData\Local\Temp\microsoft-teams-24231.512.3106.6573-installer_GREH-c1.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4728
- C:\Users\Admin\AppData\Local\Temp\is-MSKR8.tmp\microsoft-teams-24231.512.3106.6573-installer_GREH-c1.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-MSKR8.tmp\microsoft-teams-24231.512.3106.6573-installer_GREH-c1.tmp" /SL5="$601D6,837598,832512,C:\Users\Admin\AppData\Local\Temp\microsoft-teams-24231.512.3106.6573-installer_GREH-c1.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  PID:4476

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\is-JDEMF.tmp\image.jpg

Filesize
5KB

MD5
52b1f009d53eedfbd908065b2b103c5a

SHA1
5d475fabea76a2806e808d7257c12a9342446c31

SHA256
be226fe7a2530e3412a361c54976b1ad58322b112f7f5c5b98ff8c1f62941118

SHA512
3c4bc9205dca4cbea38dbe3df9fab683198bb0d12f70184b5c89396a54c50663a8ddfd291a93348e43ec97ffbef6e73894ca9deb7e95488e985b9fe60a64ef93

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-MSKR8.tmp\microsoft-teams-24231.512.3106.6573-installer_GREH-c1.tmp

Filesize
3.1MB

MD5
86bc259e1ffb8e8dc057d5be74f631dd

SHA1
63e06c6ee6aa376752485a7fb69da24adb21ce3a

SHA256
829dccea375271a0ab90e2a1f6c213690ee3b7535c107d98de4ff394c005ceb1

SHA512
0ed29aaf07f65d0929dcd2d9ca059b8d4650cde38f231c86c12e24588b59430614a95381748e9b8a7976f5881d6518df4600502a6d28c31ccf699cd41a86d76f

Download Submit
memory/4476-6-0x0000000000400000-0x000000000071C000-memory.dmp

Filesize
3.1MB

Download
memory/4476-19-0x0000000004C50000-0x0000000004D90000-memory.dmp

Filesize
1.2MB

Download
memory/4476-20-0x0000000000400000-0x000000000071C000-memory.dmp

Filesize
3.1MB

Download
memory/4476-22-0x0000000000400000-0x000000000071C000-memory.dmp

Filesize
3.1MB

Download
memory/4728-0-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/4728-2-0x0000000000401000-0x00000000004B7000-memory.dmp

Filesize
728KB

Download
memory/4728-21-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download