gcleaner | 76cebc0562d27e9d044a0bc34592c1cbed5965db5a6ab0a2869f38cdc8cc86d6

General

Target

file.exe
Size

1.3MB
MD5

32fdc555aa47ce5bd6087392ee997642
SHA1

4c8ed2c2e61df98a8cf6b463184c7d0c4e7a7ca6
SHA256

76cebc0562d27e9d044a0bc34592c1cbed5965db5a6ab0a2869f38cdc8cc86d6
SHA512

24660046a6a20c88dc8af24cb089cbcbc16094b237cac514dc0655df1ce3285392b81495551014d75ce47ed826fc7e9ac2e81edf77bc2fa7100624a0439f41fa
SSDEEP

24576:I2036ll0cJw65zk8X/Mq34Auk15qvKwus6hwCbr:I24ixm6Bk8X/XzukvNe66Cbr

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

45.139.105.171

85.31.46.167

107.182.129.235

171.22.30.106

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner

Executes dropped EXE 3 IoCs

pid	Process
972	file.tmp
4144	PitFiles449.exe
3448	zV7RLP3fVQLie.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	PitFiles449.exe

Loads dropped DLL 1 IoCs

pid	Process
972	file.tmp

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 17 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Pit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Pit Files\language\is-0KU6C.tmp	file.tmp
File created	C:\Program Files (x86)\Pit Files\language\is-3D6G4.tmp	file.tmp
File created	C:\Program Files (x86)\Pit Files\language\is-PHMTA.tmp	file.tmp
File created	C:\Program Files (x86)\Pit Files\is-115C0.tmp	file.tmp
File created	C:\Program Files (x86)\Pit Files\is-7FR08.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Pit Files\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\Pit Files\PitFiles449.exe	file.tmp
File created	C:\Program Files (x86)\Pit Files\is-E9BIN.tmp	file.tmp
File created	C:\Program Files (x86)\Pit Files\is-U1NOQ.tmp	file.tmp
File created	C:\Program Files (x86)\Pit Files\language\is-MTTPC.tmp	file.tmp
File created	C:\Program Files (x86)\Pit Files\language\is-LAOCE.tmp	file.tmp
File created	C:\Program Files (x86)\Pit Files\language\is-10LOQ.tmp	file.tmp
File created	C:\Program Files (x86)\Pit Files\language\is-OCKA0.tmp	file.tmp
File created	C:\Program Files (x86)\Pit Files\language\is-GRF04.tmp	file.tmp
File created	C:\Program Files (x86)\Pit Files\language\is-1L7KR.tmp	file.tmp
File created	C:\Program Files (x86)\Pit Files\is-BJGJ7.tmp	file.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
4436	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4144	PitFiles449.exe
4144	PitFiles449.exe
4144	PitFiles449.exe
4144	PitFiles449.exe
4144	PitFiles449.exe
4144	PitFiles449.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4144	PitFiles449.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1260 wrote to memory of 972	1260	file.exe	79
PID 1260 wrote to memory of 972	1260	file.exe	79
PID 1260 wrote to memory of 972	1260	file.exe	79
PID 972 wrote to memory of 4144	972	file.tmp	80
PID 972 wrote to memory of 4144	972	file.tmp	80
PID 972 wrote to memory of 4144	972	file.tmp	80
PID 4144 wrote to memory of 3448	4144	PitFiles449.exe	81
PID 4144 wrote to memory of 3448	4144	PitFiles449.exe	81
PID 4144 wrote to memory of 3448	4144	PitFiles449.exe	81
PID 4144 wrote to memory of 4568	4144	PitFiles449.exe	88
PID 4144 wrote to memory of 4568	4144	PitFiles449.exe	88
PID 4144 wrote to memory of 4568	4144	PitFiles449.exe	88
PID 4568 wrote to memory of 4436	4568	cmd.exe	90
PID 4568 wrote to memory of 4436	4568	cmd.exe	90
PID 4568 wrote to memory of 4436	4568	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1260
- C:\Users\Admin\AppData\Local\Temp\is-4MVJO.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-4MVJO.tmp\file.tmp" /SL5="$801DA,1128384,232960,C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:972
- - C:\Program Files (x86)\Pit Files\PitFiles449.exe
    "C:\Program Files (x86)\Pit Files\PitFiles449.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of WriteProcessMemory
    PID:4144
  - - C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\zV7RLP3fVQLie.exe
      4⤵
      Executes dropped EXE
      PID:3448
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "PitFiles449.exe" /f & erase "C:\Program Files (x86)\Pit Files\PitFiles449.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4568
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "PitFiles449.exe" /f
        5⤵
        Kills process with taskkill
        
        PID:4436

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Pit Files\PitFiles449.exe

Filesize
2.2MB

MD5
2122ef8840143a62edb4bdf001dc3d4d

SHA1
212154ecd1eed65c19d05a8c5cc2b8dc2a2ddd3a

SHA256
56756ebe6e7a67c3a6d0ba5446e74e8dd2bd32d871a4ad84c74108f19a82c07f

SHA512
0aef993187e39501243590d8eb3323da15885c4560bb550e152be7e89b06f1a177781fafd9d905f86e8840dfddd903893ba65345e40d93ee739ebea0c290b149

Download Submit
C:\Program Files (x86)\Pit Files\PitFiles449.exe

Filesize
2.2MB

MD5
2122ef8840143a62edb4bdf001dc3d4d

SHA1
212154ecd1eed65c19d05a8c5cc2b8dc2a2ddd3a

SHA256
56756ebe6e7a67c3a6d0ba5446e74e8dd2bd32d871a4ad84c74108f19a82c07f

SHA512
0aef993187e39501243590d8eb3323da15885c4560bb550e152be7e89b06f1a177781fafd9d905f86e8840dfddd903893ba65345e40d93ee739ebea0c290b149

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-4MVJO.tmp\file.tmp

Filesize
779KB

MD5
70f2afb7b9313b21cd852a33bebe23d8

SHA1
6d17a890977a7434fed0ab6f75f125335af36687

SHA256
3f7c916efbd1fae45d696f00791a93d9ad2adf18b2ee66daddb30a9d431dfe18

SHA512
dd00d319a17ee6eed692aa80426ce5004be98e550fe567c3b5d725d931e258107eb7fe2a2a181ba97b90093674bb50880b78de10ec4e64b75ecde3b303cdc447

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-4MVJO.tmp\file.tmp

Filesize
779KB

MD5
70f2afb7b9313b21cd852a33bebe23d8

SHA1
6d17a890977a7434fed0ab6f75f125335af36687

SHA256
3f7c916efbd1fae45d696f00791a93d9ad2adf18b2ee66daddb30a9d431dfe18

SHA512
dd00d319a17ee6eed692aa80426ce5004be98e550fe567c3b5d725d931e258107eb7fe2a2a181ba97b90093674bb50880b78de10ec4e64b75ecde3b303cdc447

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-HILOO.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\zV7RLP3fVQLie.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\zV7RLP3fVQLie.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1260-134-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1260-155-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1260-132-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/4144-143-0x0000000000400000-0x0000000001429000-memory.dmp

Filesize
16.2MB

Download
memory/4144-144-0x0000000000400000-0x0000000001429000-memory.dmp

Filesize
16.2MB

Download
memory/4144-142-0x0000000000400000-0x0000000001429000-memory.dmp

Filesize
16.2MB

Download
memory/4144-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/4144-153-0x0000000000400000-0x0000000001429000-memory.dmp

Filesize
16.2MB

Download

Analysis

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