e44fd281ff4ac842d66917e5f7bf43d7cf6b94afce95df2c8ee238e61cfbd0cd

Analysis

max time kernel
119s
max time network
125s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
22/07/2024, 22:17

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General

Target

$R0/Uninstall Installer.exe
Size

135KB
MD5

7bb2974cb854977b2b4745297ce816d2
SHA1

b3456478149658c6a8fe87fea090a12ac4403f67
SHA256

147e233577391c378151136938c303e3f1d245c31d70b1597932aca125ffd1a2
SHA512

90162087408fbedcada12784d06ab0f4e63962f4146839527ae2bf99940499ecdfea2cf62b3366ceb36f0c0462313a3b4c9aab6de2f320433ec2c8c5fe29ba1b
SSDEEP

3072:on77v00hEoDEtauQceAn1cR02XaH2tvhOEA1RJCir86SrSrv6Ia3D:o740IAmniRjs2t0EyL+yaz

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1252	Un_A.exe

Loads dropped DLL 7 IoCs

pid	Process
2384	Uninstall Installer.exe
1252	Un_A.exe
1252	Un_A.exe
1252	Un_A.exe
1252	Un_A.exe
1252	Un_A.exe
1252	Un_A.exe

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

System Information Discovery
T1082

Enumerates processes with tasklist 1 TTPs 1 IoCs

Process Discovery

T1057

pid	Process
2792	tasklist.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1252	Un_A.exe
2792	tasklist.exe
2792	tasklist.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2792	tasklist.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 1252	2384	Uninstall Installer.exe	31
PID 2384 wrote to memory of 1252	2384	Uninstall Installer.exe	31
PID 2384 wrote to memory of 1252	2384	Uninstall Installer.exe	31
PID 2384 wrote to memory of 1252	2384	Uninstall Installer.exe	31
PID 2384 wrote to memory of 1252	2384	Uninstall Installer.exe	31
PID 2384 wrote to memory of 1252	2384	Uninstall Installer.exe	31
PID 2384 wrote to memory of 1252	2384	Uninstall Installer.exe	31
PID 1252 wrote to memory of 2740	1252	Un_A.exe	32
PID 1252 wrote to memory of 2740	1252	Un_A.exe	32
PID 1252 wrote to memory of 2740	1252	Un_A.exe	32
PID 1252 wrote to memory of 2740	1252	Un_A.exe	32
PID 2740 wrote to memory of 2792	2740	cmd.exe	34
PID 2740 wrote to memory of 2792	2740	cmd.exe	34
PID 2740 wrote to memory of 2792	2740	cmd.exe	34
PID 2740 wrote to memory of 2792	2740	cmd.exe	34
PID 2740 wrote to memory of 2808	2740	cmd.exe	35
PID 2740 wrote to memory of 2808	2740	cmd.exe	35
PID 2740 wrote to memory of 2808	2740	cmd.exe	35
PID 2740 wrote to memory of 2808	2740	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall Installer.exe
"C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall Installer.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2384
- C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe" _?=C:\Users\Admin\AppData\Local\Temp\$R0\
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1252
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c tasklist /FI "USERNAME eq %USERNAME%" /FI "IMAGENAME eq Installer.exe" | %SYSTEMROOT%\System32\find.exe "Installer.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2740
  - - C:\Windows\SysWOW64\tasklist.exe
      tasklist /FI "USERNAME eq Admin" /FI "IMAGENAME eq Installer.exe"
      4⤵
      Enumerates processes with tasklist
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2792
  - - C:\Windows\SysWOW64\find.exe
      C:\Windows\System32\find.exe "Installer.exe"
      4⤵
      PID:2808

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Process Discovery

T1057

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\~nsuA.tmp\Un_A.exe

Filesize
135KB

MD5
7bb2974cb854977b2b4745297ce816d2

SHA1
b3456478149658c6a8fe87fea090a12ac4403f67

SHA256
147e233577391c378151136938c303e3f1d245c31d70b1597932aca125ffd1a2

SHA512
90162087408fbedcada12784d06ab0f4e63962f4146839527ae2bf99940499ecdfea2cf62b3366ceb36f0c0462313a3b4c9aab6de2f320433ec2c8c5fe29ba1b

Download Submit
\Users\Admin\AppData\Local\Temp\nsjCEF4.tmp\StdUtils.dll

Filesize
100KB

MD5
c6a6e03f77c313b267498515488c5740

SHA1
3d49fc2784b9450962ed6b82b46e9c3c957d7c15

SHA256
b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e

SHA512
9870c5879f7b72836805088079ad5bbafcb59fc3d9127f2160d4ec3d6e88d3cc8ebe5a9f5d20a4720fe6407c1336ef10f33b2b9621bc587e930d4cbacf337803

Download Submit
\Users\Admin\AppData\Local\Temp\nsjCEF4.tmp\System.dll

Filesize
12KB

MD5
0d7ad4f45dc6f5aa87f606d0331c6901

SHA1
48df0911f0484cbe2a8cdd5362140b63c41ee457

SHA256
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

SHA512
c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

Download Submit
\Users\Admin\AppData\Local\Temp\nsjCEF4.tmp\WinShell.dll

Filesize
3KB

MD5
1cc7c37b7e0c8cd8bf04b6cc283e1e56

SHA1
0b9519763be6625bd5abce175dcc59c96d100d4c

SHA256
9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6

SHA512
7acf7f8e68aa6066b59ca9f2ae2e67997e6b347bc08eb788d2a119b3295c844b5b9606757168e8d2fbd61c2cda367bf80e9e48c9a52c28d5a7a00464bfd2048f

Download Submit
\Users\Admin\AppData\Local\Temp\nsjCEF4.tmp\nsExec.dll

Filesize
6KB

MD5
ec0504e6b8a11d5aad43b296beeb84b2

SHA1
91b5ce085130c8c7194d66b2439ec9e1c206497c

SHA256
5d9ceb1ce5f35aea5f9e5a0c0edeeec04dfefe0c77890c80c70e98209b58b962

SHA512
3f918f1b47e8a919cbe51eb17dc30acc8cfc18e743a1bae5b787d0db7d26038dc1210be98bf5ba3be8d6ed896dbbd7ac3d13e66454a98b2a38c7e69dad30bb57

Download Submit