0534bd590fba16ba535feaa26babf7dd209ab721ade2c11ffbd26dd44712015a

Analysis

max time kernel
121s
max time network
124s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
06-07-2024 11:04

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General

Target

$OUTDIR/uninstall.exe
Size

123KB
MD5

ce2f18f0b8be2966d5c59d55be4b0054
SHA1

bb5a4f9ea6b5cccd9a925ab5d5d3d1c6e308ed88
SHA256

3b95720e40d10cce5fad6e94633b5bea659186a4bed042ef414cd353ec0044ae
SHA512

f3b3821e845475b9ba67bab30413ea849bc174894dcb3ad3f7a270bf0525577442d5ecd5e5d90cac39fa4d211ab125cc388df982575a4d5c3faaa580f98d2949
SSDEEP

1536:uUeHiWRgkkjH8nyWmJ7qkSZZZ3EORDUibMJMF2OC8bt6nZsfwOBeOm+k6TvDqVCm:ud/vyWmJBUXRDBbpC8bknZ7OCUTvDqIm

Score

7^/10

evasion trojan

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2424	Au_.exe

Loads dropped DLL 4 IoCs

pid	Process
1656	uninstall.exe
2424	Au_.exe
2424	Au_.exe
2424	Au_.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Au_.exe

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

System Information Discovery
T1082

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral5/files/0x000900000001866c-6.dat	nsis_installer_1
behavioral5/files/0x000900000001866c-6.dat	nsis_installer_2

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2424	Au_.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1656 wrote to memory of 2424	1656	uninstall.exe	30
PID 1656 wrote to memory of 2424	1656	uninstall.exe	30
PID 1656 wrote to memory of 2424	1656	uninstall.exe	30
PID 1656 wrote to memory of 2424	1656	uninstall.exe	30

C:\Users\Admin\AppData\Local\Temp\$OUTDIR\uninstall.exe
"C:\Users\Admin\AppData\Local\Temp\$OUTDIR\uninstall.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1656
- 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\$OUTDIR\
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks whether UAC is enabled
  - Suspicious behavior: GetForegroundWindowSpam
  PID:2424

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
123KB

MD5
ce2f18f0b8be2966d5c59d55be4b0054

SHA1
bb5a4f9ea6b5cccd9a925ab5d5d3d1c6e308ed88

SHA256
3b95720e40d10cce5fad6e94633b5bea659186a4bed042ef414cd353ec0044ae

SHA512
f3b3821e845475b9ba67bab30413ea849bc174894dcb3ad3f7a270bf0525577442d5ecd5e5d90cac39fa4d211ab125cc388df982575a4d5c3faaa580f98d2949

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\Users\Admin\AppData\Local\Temp\nsj981D.tmp\UAC.dll

Filesize
14KB

MD5
b7d7324f2128531c9777d837516b65a6

SHA1
e15e44fc7c907329e1cd3985e8666b4332f4fa48

SHA256
530dc2b26366fc86072487438317a5723a10ff8b38522f9e813df19146a31033

SHA512
829fc241cd377de094faf80bb38828c3d877170ca4a3fd85810bc911d2ce38941f8067ef681c21d8bbc04be8a99a3d32b3aec51ae7b32d3a89e5a9d9597ed8d5

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\Users\Admin\AppData\Local\Temp\nsj981D.tmp\mIRC.dll

Filesize
30KB

MD5
8423ec692d326f92dfa7db57f977d315

SHA1
65fd701692fab6dfe24ba0fa2b29e474b6f5da56

SHA256
0d1218f43e2b5b0d4e052918b5193e7e050bb9f0a9bfc39f7395276b8399b50e

SHA512
fbb0f057dc192362584efbbb5e0c9c6fa56584580b3190aba83017905a50b9b3f54aa535281eac34f4a07538a4ddee822d974cb512b4afe28e15b504376102fd

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