fa8ff6cd1cf26f4e9ee26e68cd7e764f572e9845ddbd0ca305ada1beaca97ccb

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
14-08-2024 18:05

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General

Target

Uninstall.exe
Size

119KB
MD5

009f034ca7b4eeeef212b003bec66a33
SHA1

63f74124cc8cf140b5b89a9231e158266967bb73
SHA256

7ef6d8efe1841e58f458854d1b03694b9fad80e53c0bd7469474c944ac655e80
SHA512

6a1c8bb8aa54623b151a3604d5f83bc08216f19866d29f91830dedb175634f70ae720c8723d0f8f04f92c94ebe004807fd6609e42091f29671885042841772bf
SSDEEP

3072:/k5+bFdkJHeNy4SqvntmsZ6nK1+tNI3RxahoU:40O4Bvnz/+/qRAf

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2524	A~NSISu_.exe

Loads dropped DLL 6 IoCs

pid	Process
2116	Uninstall.exe
2524	A~NSISu_.exe
2524	A~NSISu_.exe
2524	A~NSISu_.exe
2524	A~NSISu_.exe
2524	A~NSISu_.exe

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	Uninstall.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	A~NSISu_.exe

NSIS installer 1 IoCs

installer

resource	yara_rule
behavioral23/files/0x0005000000019a71-2.dat	nsis_installer_1

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2524	A~NSISu_.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2116 wrote to memory of 2524	2116	Uninstall.exe	30
PID 2116 wrote to memory of 2524	2116	Uninstall.exe	30
PID 2116 wrote to memory of 2524	2116	Uninstall.exe	30
PID 2116 wrote to memory of 2524	2116	Uninstall.exe	30
PID 2116 wrote to memory of 2524	2116	Uninstall.exe	30
PID 2116 wrote to memory of 2524	2116	Uninstall.exe	30
PID 2116 wrote to memory of 2524	2116	Uninstall.exe	30

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:2116
- C:\Users\Admin\AppData\Local\Temp\A~NSISu_.exe
  "C:\Users\Admin\AppData\Local\Temp\A~NSISu_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  PID:2524

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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\nsoAA84.tmp\ioSpecial.ini

Filesize
607B

MD5
b7e4235bfc3b72aaec7710f5c83da093

SHA1
df98ff58b1d570ec619a9d9742d8e01071db28ca

SHA256
37e1d9e22b360bc5f92b4bce2a02a6b3c2bc2f0aada59a1fad570e99a4f3a630

SHA512
dcf4db9398d2f9f137437431eeb16e2ad72cc7d9255c85354ac184020836a794fc0fb56408c7803ce95488f2a040a8f447ff02f54e2c5ecebf5a7b4018999b11

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\Users\Admin\AppData\Local\Temp\A~NSISu_.exe

Filesize
119KB

MD5
009f034ca7b4eeeef212b003bec66a33

SHA1
63f74124cc8cf140b5b89a9231e158266967bb73

SHA256
7ef6d8efe1841e58f458854d1b03694b9fad80e53c0bd7469474c944ac655e80

SHA512
6a1c8bb8aa54623b151a3604d5f83bc08216f19866d29f91830dedb175634f70ae720c8723d0f8f04f92c94ebe004807fd6609e42091f29671885042841772bf

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\Users\Admin\AppData\Local\Temp\nsoAA84.tmp\InstallOptions.dll

Filesize
12KB

MD5
57db62366ef11fdc47922a02031f0492

SHA1
6d30db5285b653025f94e74b9b045870dc0aeb7a

SHA256
2338752092918db8e068d55bea61f8cdeb9be37b6e6d30a730d9703b169b08b4

SHA512
d0257e02370863e07feb9346b88d87a102089f0c48aea13e069e55a14f0f6db51fb3d5f41ed5d2f39e36b612f4b6194a6b7c059709808bfb23ded89d0b0a3db5

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\Users\Admin\AppData\Local\Temp\nsoAA84.tmp\UserInfo.dll

Filesize
4KB

MD5
593345196fcd1c553b0702cc026ccccd

SHA1
84446849c10e0c4d6683072f4c2eea5a085bac2f

SHA256
fb4a4bea088b8dbf2adda6fdeb50be4b96bf20ba62bd9ac64b68ea628166a28d

SHA512
b28da01bec7a34a493316606c7406c06d0b278f1318563874f037caf203c2ec261c3f5c2a1790c6c177537bbb0f4dd0b7be482976f7114f70be75b5e4b311306

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