be4616d11b24ad5d37e4e5987e933bd35d656e6505f5a8e75ee5588f1ef33bb1

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
14-12-2024 23:58

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General

Target

uninstall.exe
Size

41KB
MD5

f2656f62f52556cbaa8fe63cc51c5d73
SHA1

e1cc49f855bb98996ab49caac77cd015569ac024
SHA256

2e100548df26b77c4bf3a930023daf36173a04b8242fd7d0f7132e352931e4d2
SHA512

e766a0734178530268671432fdcddf22d9913f1eabe964af48d7630dd0a3a8fb9613ea7b3f6ffe9fb3568889d954d2f20c865a0163344cdb55e7419402a0dd1d
SSDEEP

768:6HJd0TpH2+bQ2dUWVX9Hfv1JMWmtLEJOyuBxG0D3mjfS3XJdJRnSlC9ZnOlb2:6pgpHzb9dZVX9fHMvG0D3XJYlC+Q

Score

7^/10

discovery

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2176	Au_.exe

Executes dropped EXE 1 IoCs

pid	Process
2176	Au_.exe

Loads dropped DLL 2 IoCs

pid	Process
2940	uninstall.exe
2176	Au_.exe

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 3 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	uninstall.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Au_.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	avsuite.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral11/files/0x0014000000018657-2.dat	nsis_installer_1
behavioral11/files/0x0014000000018657-2.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2940 wrote to memory of 2176	2940	uninstall.exe	30
PID 2940 wrote to memory of 2176	2940	uninstall.exe	30
PID 2940 wrote to memory of 2176	2940	uninstall.exe	30
PID 2940 wrote to memory of 2176	2940	uninstall.exe	30
PID 2176 wrote to memory of 2240	2176	Au_.exe	32
PID 2176 wrote to memory of 2240	2176	Au_.exe	32
PID 2176 wrote to memory of 2240	2176	Au_.exe	32
PID 2176 wrote to memory of 2240	2176	Au_.exe	32

C:\Users\Admin\AppData\Local\Temp\uninstall.exe
"C:\Users\Admin\AppData\Local\Temp\uninstall.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2940
- C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2176
- - C:\Users\Admin\AppData\Local\Temp\avsuite.exe
    "C:\Users\Admin\AppData\Local\Temp\avsuite.exe" /terminate
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2240

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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\config.cfg

Filesize
1KB

MD5
44a2b5a5576a107e5b7da70147f30475

SHA1
8d243e67374ee2c33e126ead765158a23fd5a813

SHA256
99eb9b2619258157be9115700691d441c847df621e871a4deb18a16be4013715

SHA512
a5fe6b455cfd4418b8daaa32d711e82bf1e1570822771baced44e7818594c3246504d2068e313d88eb3569996b8c676d6c74325be4a193c81c379dd49b4dc26c

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\Users\Admin\AppData\Local\Temp\nsdD7AA.tmp\AccessControl.dll

Filesize
10KB

MD5
055f4f9260e07fc83f71877cbb7f4fad

SHA1
a245131af1a182de99bd74af9ff1fab17977a72f

SHA256
4209588362785b690d08d15cd982b8d1c62c348767ca19114234b21d5df74ddc

SHA512
a8e82dc4435ed938f090f43df953ddad9b0075f16218c09890c996299420162d64b1dbfbf613af37769ae796717eec78204dc786b757e8b1d13d423d4ee82e26

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\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

Filesize
41KB

MD5
f2656f62f52556cbaa8fe63cc51c5d73

SHA1
e1cc49f855bb98996ab49caac77cd015569ac024

SHA256
2e100548df26b77c4bf3a930023daf36173a04b8242fd7d0f7132e352931e4d2

SHA512
e766a0734178530268671432fdcddf22d9913f1eabe964af48d7630dd0a3a8fb9613ea7b3f6ffe9fb3568889d954d2f20c865a0163344cdb55e7419402a0dd1d

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