008eaa8d581649ee0ff01b193ddd2549b7c793d1db1f9f3f20e48c6632f098ec

Analysis

max time kernel
240s
max time network
253s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
22/08/2024, 13:58

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General

Target

$R0/Uninstall RetracFnPatcher.exe
Size

147KB
MD5

a27fdd5b43c5f9cc218900518a597ef1
SHA1

dde0b1e649b23c1bbaa72e0bd07a940450483267
SHA256

9503edb52b8cc23ad08d793a4bd3b7aaf374dd2f3550046abb39635368bf4054
SHA512

7dda9e307de66c3229f873a6eabc179650b4b81f835ef4476cc985429eb83d5c6826c8e66058a7592eb35de1beb559f918dcff11dc93ce5c5b6bcee14f4a15b4
SSDEEP

3072:gn77v00hEoDEtaupOeqPKgrRA/vCnZ7q5aH2tvhOEA1RJCir86SrSrv6Ia3e:g740I5OJLO/cus2t0EyL+yaO

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2456	Un_A.exe

Loads dropped DLL 7 IoCs

pid	Process
1996	Uninstall RetracFnPatcher.exe
2456	Un_A.exe
2456	Un_A.exe
2456	Un_A.exe
2456	Un_A.exe
2456	Un_A.exe
2456	Un_A.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 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 RetracFnPatcher.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Un_A.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2456	Un_A.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 2456	1996	Uninstall RetracFnPatcher.exe	29
PID 1996 wrote to memory of 2456	1996	Uninstall RetracFnPatcher.exe	29
PID 1996 wrote to memory of 2456	1996	Uninstall RetracFnPatcher.exe	29
PID 1996 wrote to memory of 2456	1996	Uninstall RetracFnPatcher.exe	29

C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall RetracFnPatcher.exe
"C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall RetracFnPatcher.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1996
- 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
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2456

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\nsp3E78.tmp\StdUtils.dll

Filesize
100KB

MD5
c6a6e03f77c313b267498515488c5740

SHA1
3d49fc2784b9450962ed6b82b46e9c3c957d7c15

SHA256
b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e

SHA512
9870c5879f7b72836805088079ad5bbafcb59fc3d9127f2160d4ec3d6e88d3cc8ebe5a9f5d20a4720fe6407c1336ef10f33b2b9621bc587e930d4cbacf337803

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\Users\Admin\AppData\Local\Temp\nsp3E78.tmp\System.dll

Filesize
12KB

MD5
0d7ad4f45dc6f5aa87f606d0331c6901

SHA1
48df0911f0484cbe2a8cdd5362140b63c41ee457

SHA256
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

SHA512
c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

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\Users\Admin\AppData\Local\Temp\nsp3E78.tmp\WinShell.dll

Filesize
3KB

MD5
1cc7c37b7e0c8cd8bf04b6cc283e1e56

SHA1
0b9519763be6625bd5abce175dcc59c96d100d4c

SHA256
9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6

SHA512
7acf7f8e68aa6066b59ca9f2ae2e67997e6b347bc08eb788d2a119b3295c844b5b9606757168e8d2fbd61c2cda367bf80e9e48c9a52c28d5a7a00464bfd2048f

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\Users\Admin\AppData\Local\Temp\nsp3E78.tmp\nsExec.dll

Filesize
6KB

MD5
ec0504e6b8a11d5aad43b296beeb84b2

SHA1
91b5ce085130c8c7194d66b2439ec9e1c206497c

SHA256
5d9ceb1ce5f35aea5f9e5a0c0edeeec04dfefe0c77890c80c70e98209b58b962

SHA512
3f918f1b47e8a919cbe51eb17dc30acc8cfc18e743a1bae5b787d0db7d26038dc1210be98bf5ba3be8d6ed896dbbd7ac3d13e66454a98b2a38c7e69dad30bb57

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\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe

Filesize
147KB

MD5
a27fdd5b43c5f9cc218900518a597ef1

SHA1
dde0b1e649b23c1bbaa72e0bd07a940450483267

SHA256
9503edb52b8cc23ad08d793a4bd3b7aaf374dd2f3550046abb39635368bf4054

SHA512
7dda9e307de66c3229f873a6eabc179650b4b81f835ef4476cc985429eb83d5c6826c8e66058a7592eb35de1beb559f918dcff11dc93ce5c5b6bcee14f4a15b4

Download Submit