gcleaner | e27f354691dca31faffbc035734347361f8b1b9e3d2c6e25e3fd856529d840c6

General

Target

e27f354691dca31faffbc035734347361f8b1b9e3d2c6e25e3fd856529d840c6.exe
Size

422KB
MD5

46e8b4c1c4e285139f664c679e0e9164
SHA1

dd73a911c541043542d527f7f4e73d6c3a119d90
SHA256

e27f354691dca31faffbc035734347361f8b1b9e3d2c6e25e3fd856529d840c6
SHA512

a150957b0f97ac2c7f096c06aa946b9e396acaf7413dbb6dbe10920eda17321916242deb074607643bc68b1264791eac96cc461d6a07de7c3277b4ad4ea4922f
SSDEEP

6144:qPG5SX+c9kcgeDDOruVqtNNGyaWC5bnqgVa1uQHP6B:D5qkmSruU/NuWaqgIPHi

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

C2

80.66.75.114

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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	e27f354691dca31faffbc035734347361f8b1b9e3d2c6e25e3fd856529d840c6.exe

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

System Information Discovery
T1082

Program crash 8 IoCs

pid	pid_target	Process	procid_target
2972	964	WerFault.exe	89
1144	964	WerFault.exe	89
3288	964	WerFault.exe	89
4840	964	WerFault.exe	89
4900	964	WerFault.exe	89
3736	964	WerFault.exe	89
1576	964	WerFault.exe	89
3320	964	WerFault.exe	89

System Location Discovery: System Language Discovery 1 TTPs 3 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	e27f354691dca31faffbc035734347361f8b1b9e3d2c6e25e3fd856529d840c6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1548	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1548	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 964 wrote to memory of 4440	964	e27f354691dca31faffbc035734347361f8b1b9e3d2c6e25e3fd856529d840c6.exe	117
PID 964 wrote to memory of 4440	964	e27f354691dca31faffbc035734347361f8b1b9e3d2c6e25e3fd856529d840c6.exe	117
PID 964 wrote to memory of 4440	964	e27f354691dca31faffbc035734347361f8b1b9e3d2c6e25e3fd856529d840c6.exe	117
PID 4440 wrote to memory of 1548	4440	cmd.exe	120
PID 4440 wrote to memory of 1548	4440	cmd.exe	120
PID 4440 wrote to memory of 1548	4440	cmd.exe	120

C:\Users\Admin\AppData\Local\Temp\e27f354691dca31faffbc035734347361f8b1b9e3d2c6e25e3fd856529d840c6.exe
"C:\Users\Admin\AppData\Local\Temp\e27f354691dca31faffbc035734347361f8b1b9e3d2c6e25e3fd856529d840c6.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:964
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 964 -s 740
  2⤵
  - Program crash
  PID:2972
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 964 -s 760
  2⤵
  - Program crash
  PID:1144
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 964 -s 776
  2⤵
  - Program crash
  PID:3288
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 964 -s 788
  2⤵
  - Program crash
  PID:4840
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 964 -s 904
  2⤵
  - Program crash
  PID:4900
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 964 -s 980
  2⤵
  - Program crash
  PID:3736
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 964 -s 1332
  2⤵
  - Program crash
  PID:1576
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "e27f354691dca31faffbc035734347361f8b1b9e3d2c6e25e3fd856529d840c6.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\e27f354691dca31faffbc035734347361f8b1b9e3d2c6e25e3fd856529d840c6.exe" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4440
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "e27f354691dca31faffbc035734347361f8b1b9e3d2c6e25e3fd856529d840c6.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1548
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 964 -s 1356
  2⤵
  - Program crash
  PID:3320

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 964 -ip 964
1⤵
PID:2868

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 964 -ip 964
1⤵
PID:4432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 964 -ip 964
1⤵
PID:4864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 964 -ip 964
1⤵
PID:2288

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 964 -ip 964
1⤵
PID:772

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 964 -ip 964
1⤵
PID:3648

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4360,i,7447299413640964517,4240724842020506306,262144 --variations-seed-version --mojo-platform-channel-handle=4404 /prefetch:8
1⤵
PID:4612

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 964 -ip 964
1⤵
PID:1332

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 964 -ip 964
1⤵
PID:4548

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\BKKBWXOR\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/964-1-0x0000000002490000-0x0000000002590000-memory.dmp

Filesize
1024KB

Download
memory/964-2-0x00000000041D0000-0x00000000041FD000-memory.dmp

Filesize
180KB

Download
memory/964-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/964-8-0x0000000002490000-0x0000000002590000-memory.dmp

Filesize
1024KB

Download
memory/964-9-0x0000000000400000-0x0000000002483000-memory.dmp

Filesize
32.5MB

Download
memory/964-11-0x00000000041D0000-0x00000000041FD000-memory.dmp

Filesize
180KB

Download
memory/964-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/964-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/964-21-0x0000000000400000-0x0000000002483000-memory.dmp

Filesize
32.5MB

Download

Analysis

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