1a0b08df8b00187140cba1f2643cfcd5b912b1fd91249064d1fc7320759f88e7

Analysis

max time kernel
129s
max time network
133s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 01:40

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General

Target

$TEMP/TeamViewer/Version4/TeamViewer_.exe
Size

1.4MB
MD5

fef783b93197986c60cd34c9b385bb91
SHA1

9784dabbbb4b2e0b25a00c2ffbdc6bc348813a25
SHA256

1db4fdc98e47ff1e9c2d242d010760425b9997ab75b6fa32848c388f8d41e29a
SHA512

e048882c97f87a10c302ba74d42d8a9e3830d333b95033fca748c0ad93b5c0def54104b986388301a60f44018bdeb1eae4ff0d8415028e4159401a0168e4a72a
SSDEEP

24576:uaTstd4Y2e+WA6KOGGeRY2lrWE/eNZ+8+THJr+PD7RhgqkvjE1zabQgNMlIOtuoZ:VTWQ3OGGeN/KPdhzabQgNMlDtuF52B

Score

7^/10

spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

TeamViewer.exe

pid process

2772 TeamViewer.exe

pid	process
2772	TeamViewer.exe

Loads dropped DLL 9 IoCs

Processes:

TeamViewer_.exeTeamViewer.exe

pid	process
2240	TeamViewer_.exe
2240	TeamViewer_.exe
2240	TeamViewer_.exe
2240	TeamViewer_.exe
2240	TeamViewer_.exe
2240	TeamViewer_.exe
2240	TeamViewer_.exe
2240	TeamViewer_.exe
2772	TeamViewer.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
T1552.001

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral3/memory/2240-0-0x0000000000400000-0x0000000000433000-memory.dmp	upx
behavioral3/memory/2240-50-0x0000000000400000-0x0000000000433000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

Processes:

TeamViewer.exe

description	ioc	process
File created	C:\Program Files (x86)\QS\SAS.exe	TeamViewer.exe
File opened for modification	C:\Program Files (x86)\QS\SAS.exe	TeamViewer.exe

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

System Information Discovery
T1082
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

TeamViewer.exe

pid process

2772 TeamViewer.exe

pid	process
2772	TeamViewer.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

TeamViewer_.exe

description	pid	process	target process
PID 2240 wrote to memory of 2772	2240	TeamViewer_.exe	TeamViewer.exe
PID 2240 wrote to memory of 2772	2240	TeamViewer_.exe	TeamViewer.exe
PID 2240 wrote to memory of 2772	2240	TeamViewer_.exe	TeamViewer.exe
PID 2240 wrote to memory of 2772	2240	TeamViewer_.exe	TeamViewer.exe

C:\Users\Admin\AppData\Local\Temp\$TEMP\TeamViewer\Version4\TeamViewer_.exe
"C:\Users\Admin\AppData\Local\Temp\$TEMP\TeamViewer\Version4\TeamViewer_.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2240

C:\Users\Admin\temp\TeamViewer\Version4\TeamViewer.exe
"C:\Users\Admin\temp\TeamViewer\Version4\TeamViewer.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
PID:2772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nst7DD8.tmp\Base64.dll

Filesize
456KB

MD5
9459a28dbb2752d59eaa8fbb5cf8c982

SHA1
4ad7eb230cf6d05df967037225fa19dd385bf7cb

SHA256
4688dcd01db816485a770cb8fc047fef9a408f3dbec5a2c83752fee115ce6963

SHA512
7dff6414f4215aa4c7a168158b4ac5dd422c7dd35c6af58bce658c6bf9bf5a3545a5ee0db5f5d47a17c7ae53cb54551b98b492137e36c73e684b2041d775cd97

Download Submit
C:\Users\Admin\temp\TeamViewer\Version4\SAS.exe

Filesize
53KB

MD5
bf3bcd752bdabfa1f1e84b7462738103

SHA1
34cb8ea7d47467cace271e03b7869f37b0ecb30a

SHA256
90fe790e189c384f2ab82958057f91fdf40888c2ed3c0471bd7b85d5b36c7810

SHA512
6d5362c4d354319845f4522e0d1132c32a6779efc4c013c8c7bd489fddf39cbb5dfb72b135487b660d156d7774e5be4acc03c3fcecdb6dabcfad12630a3f5955

Download Submit
\Users\Admin\AppData\Local\Temp\nst7DD8.tmp\GetVersion.dll

Filesize
5KB

MD5
c6910d6e78c2e5f9d57d0bc6d8f6b736

SHA1
a395099062298b3f3c015359b227ca02a72c6e2c

SHA256
b2c32af2b0d75dfd08ae4e1ad7c5897957240b32bf7a16855d6a46512d272b9b

SHA512
4cd45b887ce5b7fecfd863cae83817465d7378cc9f5b50f5762d5f209c55a37257d94e91dea4c91c66f2c5bf22cdc1f5545eeef52a090f05cceeedf59bbd2a10

Download Submit
\Users\Admin\AppData\Local\Temp\nst7DD8.tmp\System.dll

Filesize
10KB

MD5
0b96e50e5fd9b241435cfec46600b5a7

SHA1
1f79688c6bdd78b4e1812b110fd16d27c59b32d5

SHA256
10841d8d0a0fa457a62be63af7e30e72ffaec265470dbe16c0d61cc5b111d1e6

SHA512
01a5884ce81a622f81da23c4075aef4cbe68d18471908bb6082ad98bfd002c8a6c2b8069d250df0320cde22ad76eedc14a5d9369b370c2012d58575720da48b7

Download Submit
\Users\Admin\temp\TeamViewer\Version4\TV.dll

Filesize
64KB

MD5
4b030749eef3498b8efbaf2877a59fb5

SHA1
70d65a57582fa7145bcf7198e0751e5a3bfffcc5

SHA256
ee4f367a4074fa13d15eb17ae9e140d38b249959a29d6e4146c0577df2fed01b

SHA512
9a265c06a377bbcaba9b6b0e2752657701fd1fb82613d7ba520e4739108951d0059e1c8d7533a3e94928e5971a9d2fc575d3adc67f4ac768f844c63a5e11e8c7

Download Submit
\Users\Admin\temp\TeamViewer\Version4\TeamViewer.exe

Filesize
3.4MB

MD5
84a8afd4d54164c1e6e9cdf0dcd28eaa

SHA1
3943120c742d3adc2060e5d4479ebafd0102cee5

SHA256
9ade5287b8a8b0910a01235f8c5be41bf3d19b89e92ca6416bf7827c0dadbd30

SHA512
0e0783974c031d5098141a4d5cabf9f74ba60cf73e2e7e8ad8141488700df87538af5a89d6ee30152d04ed04dde0146d290bf87fd4e268f3fa82ee7dfbd035f1

Download Submit
memory/2240-0-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download
memory/2240-33-0x0000000010000000-0x00000000100A0000-memory.dmp

Filesize
640KB

Download
memory/2240-50-0x0000000000400000-0x0000000000433000-memory.dmp

Filesize
204KB

Download