6abf9fcec5883b6e4d70810e60bd2d8a133a1a62bc28ca5d17dcc6f45d35214a

Analysis

max time kernel
117s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
26-05-2024 17:39

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General

Target

Uninstall.exe
Size

85KB
MD5

1051242fb44103a5534ff0356c1b00fb
SHA1

513bf55b6813bd9ff19ca7bf2b6979a3ef8b5b1d
SHA256

a5d85bfcb4373db41295deef8d54f4591edf69403d6bb709a5ccd861455d1af7
SHA512

54670c286816ab9b853eaad0ca928e69e061eb233fa3979c2dd37fae379e50a4cc86f67504c2b0205df23c30ef2218edd23ba68caa72c5495aeeeb338728f74a
SSDEEP

1536:QCaIoX1oYOcbTMV88TXJLEDnnrmnx36FPhjtxQsOk63dcBuX6gSzR/7N:QCaZ2Yrb0VTXJYDnqxwZWX3we6Z9R

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

Au_.exe

pid process

3056 Au_.exe
Loads dropped DLL 3 IoCs

Processes:

Uninstall.exeAu_.exe

pid process

2604 Uninstall.exe
3056 Au_.exe
3056 Au_.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3056	Au_.exe

pid	process
2604	Uninstall.exe
3056	Au_.exe
3056	Au_.exe

NSIS installer 2 IoCs

installer

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe	nsis_installer_1
\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe	nsis_installer_2

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Au_.exe

pid process

3056 Au_.exe

pid	process
3056	Au_.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

Uninstall.exe

description	pid	process	target process
PID 2604 wrote to memory of 3056	2604	Uninstall.exe	Au_.exe
PID 2604 wrote to memory of 3056	2604	Uninstall.exe	Au_.exe
PID 2604 wrote to memory of 3056	2604	Uninstall.exe	Au_.exe
PID 2604 wrote to memory of 3056	2604	Uninstall.exe	Au_.exe

C:\Users\Admin\AppData\Local\Temp\Uninstall.exe
"C:\Users\Admin\AppData\Local\Temp\Uninstall.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2604

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⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: GetForegroundWindowSpam
PID:3056

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nst83F0.tmp\ioSpecial.ini
Filesize
572B

MD5
fa595efad798c117c939938abd75dd55

SHA1
7816bc74b8731daba7bb39fca090eabf1ae22520

SHA256
5fc0deb7d71f52d51fe9b21b857b5f4f9b3b331aebb955f13b26ce85d7e17953

SHA512
afaae13f431a67fc6f4d81259edca90401c351ec08a8f8d19baee2cac33d04aa2ae190d8fdfbdcb23cef29fd16812e4bf46f09cfe5bef469ccf98c08966e2811

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C:\Users\Admin\AppData\Local\Temp\nst83F0.tmp\ioSpecial.ini
Filesize
611B

MD5
16c43d1b75e7cf307f2203c9cf5bf8cb

SHA1
25f757b4ca595124571c1fb296e00971347eaf12

SHA256
acb8496060aa1f6044995e1ef6145c0a25a291c004b25e080c00c229b31ecdca

SHA512
3d5c2e44e5b7102b36b7efda80cad5fae134116ce6c42629c68f996100acfb8f913c22251defafb55ffff8203316797b28daa796069b6a22ff85737b05e70bf8

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\Users\Admin\AppData\Local\Temp\nst83F0.tmp\InstallOptions.dll
Filesize
14KB

MD5
714e0ecd29f9ec555f350f38672726c7

SHA1
555b1492e782d7a30f280f2aecb64c642c1aaad3

SHA256
21fea4cf18de8e25d0ffa3375699150fcd04e6d470358696f2dffdd3fc09d7f3

SHA512
ced5814f25b688d1ede5a1395bcca69e1a0cba260104f156dc03de6ebb2015f6d832fed86ac234c36a10a75be33f489a63c8bd6111e3aaf4b078af1d94b00312

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\Users\Admin\AppData\Local\Temp\nst83F0.tmp\System.dll
Filesize
11KB

MD5
960a5c48e25cf2bca332e74e11d825c9

SHA1
da35c6816ace5daf4c6c1d57b93b09a82ecdc876

SHA256
484f8e9f194ed9016274ef3672b2c52ed5f574fb71d3884edf3c222b758a75a2

SHA512
cc450179e2d0d56aee2ccf8163d3882978c4e9c1aa3d3a95875fe9ba9831e07ddfd377111dc67f801fa53b6f468a418f086f1de7c71e0a5b634e1ae2a67cd3da

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\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
Filesize
85KB

MD5
1051242fb44103a5534ff0356c1b00fb

SHA1
513bf55b6813bd9ff19ca7bf2b6979a3ef8b5b1d

SHA256
a5d85bfcb4373db41295deef8d54f4591edf69403d6bb709a5ccd861455d1af7

SHA512
54670c286816ab9b853eaad0ca928e69e061eb233fa3979c2dd37fae379e50a4cc86f67504c2b0205df23c30ef2218edd23ba68caa72c5495aeeeb338728f74a

Download Submit