gcleaner | 5cf5738180eef57579603861d64e85be72a43add89d83e0c7185bcbca47f2e6b

Analysis

max time kernel
145s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
13/05/2023, 06:50

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General

Target

8434521309404017e90d24c7e8be688b.exe
Size

1.9MB
MD5

8434521309404017e90d24c7e8be688b
SHA1

06181d34639f29671cd1e4e05328671373c6e46d
SHA256

5cf5738180eef57579603861d64e85be72a43add89d83e0c7185bcbca47f2e6b
SHA512

f55138b35dfe9c9c5defcc78fc72096f9ea4996336f735194356efb0b89bf0e8c4d9d33ab843acebd792187333e58b65c67a9ce0582a0dbca401dcfb4610ce49
SSDEEP

49152:s8z2rbTl99ist6yADxL1fALEPZFrKJFYbYvAG5cX:s8SHxfisth81fiE+FuiXcX

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

45.12.253.56

45.12.253.72

45.12.253.98

45.12.253.75

Signatures

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

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-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	Rec512.exe

Executes dropped EXE 3 IoCs

pid	Process
2324	is-TQD25.tmp
2604	Rec512.exe
4356	WLwSHngCcU4vr.exe

Loads dropped DLL 3 IoCs

pid	Process
2324	is-TQD25.tmp
2324	is-TQD25.tmp
2324	is-TQD25.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 9 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\FLCCover\Rec512\unins000.dat	is-TQD25.tmp
File created	C:\Program Files (x86)\FLCCover\Rec512\is-H62HD.tmp	is-TQD25.tmp
File created	C:\Program Files (x86)\FLCCover\Rec512\data\is-V9GO0.tmp	is-TQD25.tmp
File opened for modification	C:\Program Files (x86)\FLCCover\Rec512\unins000.dat	is-TQD25.tmp
File opened for modification	C:\Program Files (x86)\FLCCover\Rec512\Rec512.exe	is-TQD25.tmp
File created	C:\Program Files (x86)\FLCCover\Rec512\is-J28PM.tmp	is-TQD25.tmp
File created	C:\Program Files (x86)\FLCCover\Rec512\is-IPNDU.tmp	is-TQD25.tmp
File created	C:\Program Files (x86)\FLCCover\Rec512\is-BTBPT.tmp	is-TQD25.tmp
File created	C:\Program Files (x86)\FLCCover\Rec512\is-SGQON.tmp	is-TQD25.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
4504	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2604	Rec512.exe
2604	Rec512.exe
2604	Rec512.exe
2604	Rec512.exe
2604	Rec512.exe
2604	Rec512.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4504	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4736 wrote to memory of 2324	4736	8434521309404017e90d24c7e8be688b.exe	85
PID 4736 wrote to memory of 2324	4736	8434521309404017e90d24c7e8be688b.exe	85
PID 4736 wrote to memory of 2324	4736	8434521309404017e90d24c7e8be688b.exe	85
PID 2324 wrote to memory of 2604	2324	is-TQD25.tmp	86
PID 2324 wrote to memory of 2604	2324	is-TQD25.tmp	86
PID 2324 wrote to memory of 2604	2324	is-TQD25.tmp	86
PID 2604 wrote to memory of 4356	2604	Rec512.exe	87
PID 2604 wrote to memory of 4356	2604	Rec512.exe	87
PID 2604 wrote to memory of 4356	2604	Rec512.exe	87
PID 2604 wrote to memory of 1172	2604	Rec512.exe	89
PID 2604 wrote to memory of 1172	2604	Rec512.exe	89
PID 2604 wrote to memory of 1172	2604	Rec512.exe	89
PID 1172 wrote to memory of 4504	1172	cmd.exe	91
PID 1172 wrote to memory of 4504	1172	cmd.exe	91
PID 1172 wrote to memory of 4504	1172	cmd.exe	91

C:\Users\Admin\AppData\Local\Temp\8434521309404017e90d24c7e8be688b.exe
"C:\Users\Admin\AppData\Local\Temp\8434521309404017e90d24c7e8be688b.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4736
- C:\Users\Admin\AppData\Local\Temp\is-G0T81.tmp\is-TQD25.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-G0T81.tmp\is-TQD25.tmp" /SL4 $B0054 "C:\Users\Admin\AppData\Local\Temp\8434521309404017e90d24c7e8be688b.exe" 1778433 51712
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:2324
- - C:\Program Files (x86)\FLCCover\Rec512\Rec512.exe
    "C:\Program Files (x86)\FLCCover\Rec512\Rec512.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2604
  - - C:\Users\Admin\AppData\Roaming\{7f74da3b-b191-11ed-abe8-806e6f6e6963}\WLwSHngCcU4vr.exe
      4⤵
      Executes dropped EXE
      PID:4356
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "Rec512.exe" /f & erase "C:\Program Files (x86)\FLCCover\Rec512\Rec512.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1172
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "Rec512.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4504

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\FLCCover\Rec512\Rec512.exe

Filesize
1.6MB

MD5
448d3c217cc5802cd99606c27b1262a1

SHA1
202c7ca2b830b32d4482f74fd8d8386697a99219

SHA256
3d06673c7da061473b70be3492e383f8a43ef62d622bf9150380e936b3703cb4

SHA512
3a30bd3b8b54e4f1cbd279105173c1a555266d62b50a3c50fb154b9658ec5855c41a5f7d2819b40f5090cc1e30f4788a162c7409a9e907308ad5a4dbb9337159

Download Submit
C:\Program Files (x86)\FLCCover\Rec512\Rec512.exe

Filesize
1.6MB

MD5
448d3c217cc5802cd99606c27b1262a1

SHA1
202c7ca2b830b32d4482f74fd8d8386697a99219

SHA256
3d06673c7da061473b70be3492e383f8a43ef62d622bf9150380e936b3703cb4

SHA512
3a30bd3b8b54e4f1cbd279105173c1a555266d62b50a3c50fb154b9658ec5855c41a5f7d2819b40f5090cc1e30f4788a162c7409a9e907308ad5a4dbb9337159

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\4HAJQ22Y\dll[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-73IDT.tmp\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-73IDT.tmp\_isdecmp.dll

Filesize
32KB

MD5
b4786eb1e1a93633ad1b4c112514c893

SHA1
734750b771d0809c88508e4feb788d7701e6dada

SHA256
2ae4169f721beb389a661e6dbb18bc84ef38556af1f46807da9d87aec2a6f06f

SHA512
0882d2aa163ece22796f837111db0d55158098035005e57cd2e9b8d59dc2e582207840bf98bee534b81c368acf60ab5d8ecbe762209273bda067a215cdb2c0c6

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-73IDT.tmp\_isdecmp.dll

Filesize
32KB

MD5
b4786eb1e1a93633ad1b4c112514c893

SHA1
734750b771d0809c88508e4feb788d7701e6dada

SHA256
2ae4169f721beb389a661e6dbb18bc84ef38556af1f46807da9d87aec2a6f06f

SHA512
0882d2aa163ece22796f837111db0d55158098035005e57cd2e9b8d59dc2e582207840bf98bee534b81c368acf60ab5d8ecbe762209273bda067a215cdb2c0c6

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-G0T81.tmp\is-TQD25.tmp

Filesize
643KB

MD5
72d3c1e3acb10e576f02c9b635ee58d8

SHA1
00345a3076ade8192bf3298e16d5fdf754daf793

SHA256
4ccf3c1393e21c1fb0e525da285d125e9773bb1d554d830b3219f894e3b59fd7

SHA512
30a5c390dbee02ae57e520c118a53e7cfb89bda244c01b519e5fa4ca8b5b2d88c92b99141a720bfc24acc946170e087b2e8ad01f76c83931b1d039dce1f3133a

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-G0T81.tmp\is-TQD25.tmp

Filesize
643KB

MD5
72d3c1e3acb10e576f02c9b635ee58d8

SHA1
00345a3076ade8192bf3298e16d5fdf754daf793

SHA256
4ccf3c1393e21c1fb0e525da285d125e9773bb1d554d830b3219f894e3b59fd7

SHA512
30a5c390dbee02ae57e520c118a53e7cfb89bda244c01b519e5fa4ca8b5b2d88c92b99141a720bfc24acc946170e087b2e8ad01f76c83931b1d039dce1f3133a

Download Submit
C:\Users\Admin\AppData\Roaming\{7f74da3b-b191-11ed-abe8-806e6f6e6963}\WLwSHngCcU4vr.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{7f74da3b-b191-11ed-abe8-806e6f6e6963}\WLwSHngCcU4vr.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/2324-186-0x0000000000400000-0x00000000004CF000-memory.dmp

Filesize
828KB

Download
memory/2324-153-0x0000000000650000-0x0000000000651000-memory.dmp

Filesize
4KB

Download
memory/2324-204-0x0000000000400000-0x00000000004CF000-memory.dmp

Filesize
828KB

Download
memory/2604-171-0x0000000000400000-0x0000000001395000-memory.dmp

Filesize
15.6MB

Download
memory/2604-172-0x0000000000400000-0x0000000001395000-memory.dmp

Filesize
15.6MB

Download
memory/2604-180-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/2604-187-0x0000000000400000-0x0000000001395000-memory.dmp

Filesize
15.6MB

Download
memory/2604-203-0x0000000000400000-0x0000000001395000-memory.dmp

Filesize
15.6MB

Download
memory/4736-184-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/4736-133-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/4736-205-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download