0ac742aec8700282365d1d5b1495817d80d0ed3e68118369dc249dfc2b3a14d4

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General

Target
Fluffy-Client-Setup-1.0.21.exe
Size 83.0MB
Sample260828-aejphsdr9w
SHA256 0ac742aec8700282365d1d5b1495817d80d0ed3e68118369dc249dfc2b3a14d4
MD5 9a0756b52ab324f71ae0b5664d8e4333
SHA1 f58a53e1efc49c1b29493a353162edbd4fedb448
SHA512 4bc1cb4c5814e07647627b895f9c8a9d985755d2b4adde7244fb279920025a1d830558c8a5dcdef6a0f57c993ba875ad4e8ba52b0815261f29d923a22d80bddc
SSDEEP 1572864:3QqjE4mzh0GeqkKkOQzPx8jws0wWoJPiBH8sRlxTxk0JGb+4VCh6mw:3rR0h0GeqkAQDxXAax8sNTxkEUf02
TLSH
T1D9183305690A9472EB4E81F3D3C177B371271F099BA74D7E21A2706437B90AD138B6EE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

Malware Config

Targets

- Target
  Fluffy-Client-Setup-1.0.21.exe
- Size 83.0MB
- SHA256 0ac742aec8700282365d1d5b1495817d80d0ed3e68118369dc249dfc2b3a14d4
- MD5 9a0756b52ab324f71ae0b5664d8e4333
- SHA1 f58a53e1efc49c1b29493a353162edbd4fedb448
- SHA512 4bc1cb4c5814e07647627b895f9c8a9d985755d2b4adde7244fb279920025a1d830558c8a5dcdef6a0f57c993ba875ad4e8ba52b0815261f29d923a22d80bddc
- SSDEEP 1572864:3QqjE4mzh0GeqkKkOQzPx8jws0wWoJPiBH8sRlxTxk0JGb+4VCh6mw:3rR0h0GeqkAQDxXAax8sNTxkEUf02
- TLSH
  T1D9183305690A9472EB4E81F3D3C177B371271F099BA74D7E21A2706437B90AD138B6EE
- MD5 SHA1 SHA512 SSDEEP TLSH
Score

7^/10

backdoor discovery execution hacktool proxy tunnel
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE
- Loads dropped DLL
- Reverse proxy tool: FRP aka Fast Reverse Proxy
  FRP (Fast Reverse Proxy) can be abused to bypass network security and establish persistent backdoors. This open-source utility tunnels traffic through a public server to expose internal services behind NAT or firewalls.
  hacktool tunnel proxy backdoor
- Checks installed software on the system
  Looks up Uninstall key entries in the registry to enumerate software on the system.
  discovery
- Discovers running processes
  Running process information can be used to identify security tools or plan follow-on actions.
  discovery
behavioral1 behavioral2
- Target
  $PLUGINSDIR/StdUtils.dll
- Size 100KB
- SHA256 b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e
- MD5 c6a6e03f77c313b267498515488c5740
- SHA1 3d49fc2784b9450962ed6b82b46e9c3c957d7c15
- SHA512 9870c5879f7b72836805088079ad5bbafcb59fc3d9127f2160d4ec3d6e88d3cc8ebe5a9f5d20a4720fe6407c1336ef10f33b2b9621bc587e930d4cbacf337803
- SSDEEP 3072:WNuZmJ9TDP3ahD2TF7Rq9cJNPhF9vyHf:WNuZ81zaAFHhF9v
- TLSH
  T125A33B62A2FA9CF5E4E70B3D1469BB264CBB7B383431D93F2342054B8534586DA2D35B
- MD5 SHA1 SHA512 SSDEEP TLSH
Score

3^/10

discovery
behavioral3 behavioral4
- Target
  $PLUGINSDIR/System.dll
- Size 12KB
- SHA256 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
- MD5 0d7ad4f45dc6f5aa87f606d0331c6901
- SHA1 48df0911f0484cbe2a8cdd5362140b63c41ee457
- SHA512 c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9
- SSDEEP 192:1enY0LWelt70elWjvfstJcVtwtYbjnIOg5AaDnbC7ypXhtIj:18PJlt70esj0Mt9vn6ay6
- TLSH
  T1BA428E12977049F2F1A0183C10A67F265FBEAE5C1BE445A39FE380867D652DF9436343
- MD5 SHA1 SHA512 SSDEEP TLSH
Score

3^/10

discovery
behavioral5 behavioral6
- Target
  $PLUGINSDIR/UAC.dll
- Size 14KB
- SHA256 2f7f8fc05dc4fd0d5cda501b47e4433357e887bbfed7292c028d99c73b52dc08
- MD5 adb29e6b186daa765dc750128649b63d
- SHA1 160cbdc4cb0ac2c142d361df138c537aa7e708c9
- SHA512 b28adcccf0c33660fecd6f95f28f11f793dc9988582187617b4c113fb4e6fdad4cf7694cd8c0300a477e63536456894d119741a940dda09b7df3ff0087a7eada
- SSDEEP 192:DiF6v2imI36Op/tGZGfWxdyWHD0I53vLl7WVl8e04IpDlPjs:DGVY6ClGoWxXH75T1WVl83lLs
- TLSH
  T10F623AAA62E847BEE2221636B96723130BFDB5203DA1D01F4D531E596C30BE3953D61A
- MD5 SHA1 SHA512 SSDEEP TLSH
Score

3^/10

discovery
behavioral7 behavioral8
- Target
  $PLUGINSDIR/WinShell.dll
- Size 3KB
- SHA256 9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6
- MD5 1cc7c37b7e0c8cd8bf04b6cc283e1e56
- SHA1 0b9519763be6625bd5abce175dcc59c96d100d4c
- SHA512 7acf7f8e68aa6066b59ca9f2ae2e67997e6b347bc08eb788d2a119b3295c844b5b9606757168e8d2fbd61c2cda367bf80e9e48c9a52c28d5a7a00464bfd2048f
- TLSH
  T16A51365F13BED7A4C3071738A6FBDC85749B440012C659558BB2172ABF141E0BB3CD08
- MD5 SHA1 SHA512 TLSH
Score

3^/10

discovery
behavioral10 behavioral9
- Target
  Fluffy Client.exe
- Size 180.0MB
- SHA256 503357e5b512e956c76295e97b808f768adcfe0be43e58c7166196de08ecc189
- MD5 1341cc85acb7bb6ef7812b8fb866fdac
- SHA1 bb58a63d3f22d6c370672936bbc9b6381db3b66e
- SHA512 8112b1c3c6617130a8c9f9327af9d2b502dc8623275d97f6e691b24eefd739be8907acb385c160617a74dc22826093a3407b6ec41fa72d8640cdaa01697e13da
- SSDEEP 1572864:yH0f0gqxb0WBFh/LVO9dyKcRmAswCXj5EtV4ga5h0q2ZOADpAyK5/Y3P8kbVr+qI:/sok+hK7
- TLSH
  T1BE988C03F39A50D9E01DD1B58B9B9633EAB1B8854324A2DF27540B512F77EE86B3DB10
- MD5 SHA1 SHA512 SSDEEP TLSH
Score

7^/10
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
behavioral11
- Target
  LICENSES.chromium.html
- Size 8.7MB
- SHA256 c6080d60736384a4a8fdd23404d59ae2d939e5124d80df89f8fd4e450bb9bd6f
- MD5 edaeffe92dbfd973958c9d2267201b32
- SHA1 ae43e814d3eea2ff27bb414c9e26ecb1b5c0341f
- SHA512 d0e58cf4bc9db25982d726f1ba65924bcef8fa405f06f6abf0ab80177d691805ff228039c5a85c3a8029e4422fd50c3d8e84bc6528771092c79e3d5229f43281
- SSDEEP 24576:2o9dQj6p6j6j1WZswRiXj3mfI/6k6mjK64jK6gjK6e6cjK6feGjl8LpH:BWVeG2
- TLSH
  T1E896A52F7B48037306C642A26B8B65CAF21F903F3B561654345CD1681F6BA2983FF6D9
- MD5 SHA1 SHA512 SSDEEP TLSH
Score

3^/10

discovery
behavioral12 behavioral13
- Target
  d3dcompiler_47.dll
- Size 4.7MB
- SHA256 af7b99be1b8770c0e4d18e43b04e81d11bdeb667fa6b07ade7a88f4c5676bf9a
- MD5 a7b7470c347f84365ffe1b2072b4f95c
- SHA1 57a96f6fb326ba65b7f7016242132b3f9464c7a3
- SHA512 83391a219631f750499fd9642d59ec80fb377c378997b302d10762e83325551bb97c1086b181fff0521b1ca933e518eab71a44a3578a23691f215ebb1dce463d
- SSDEEP 49152:hCZnRO4XyM53Rkq4ypQqdoRpmruVNYvkaRwvdiD0N+YEzI4og/RfzHLeHTRhFRN1:oG2QCwmHjnog/pzHAo/Ayc
- TLSH
  T13C367C5673EA40B9C1ABD178CE479213EBB1781403345BEB4190C669AF73BE16A3E734
- MD5 SHA1 SHA512 SSDEEP TLSH
Score

1^/10
behavioral14
- Target
  ffmpeg.dll
- Size 2.8MB
- SHA256 4fcdedbc68eae4b4cfe0eed275316fdf66c9d4a57a98d29a77d0e8f4149cfcbc
- MD5 e3bdb59b37b730647d4a1e44756a730d
- SHA1 bb435a479fa6956f3d091c927d12c2f71e433c35
- SHA512 891a72c6091ef4fde7a373f6df0f1e39d40bce67a1a7f8509782c6373baf481a73276051b77d5946875d1ff449ca23083635e4f4030058f7b1bfe35135a1c98c
- SSDEEP 49152:0FUWNgdIjHFoDr2XlKVDdusGH6qfLgvsI74i3OQ+Jhp:0F2IDq3CYVDdufU4i6hp
- TLSH
  T178D5AE03F6D950DDD029C075979F9223F671344A8F1266EF26E05A202E67FD86E3E329
- MD5 SHA1 SHA512 SSDEEP TLSH
Score

1^/10
behavioral15
- Target
  libEGL.dll
- Size 481KB
- SHA256 d9d2f5b5fae60a63523f92c07539dd93893ff7d9ffa41f0bb57caca4be9f2220
- MD5 c13e55ae6200e74c0b121cbd5c1d323d
- SHA1 098675729109e19a0b6cbedbbf45398265ab6644
- SHA512 b7f802afd0e195c47cb4014b2af2a532781648367c2fc6695d2142afa6b65a35c699a4bea9eef5694e01ec863b3c259a9a3bdead4d889195a9b22dfea7461f1b
- SSDEEP 6144:43f2CrNZCHZWHCxmx0vfbjj306LhQQ3WU3y0iSj/88Pg:6vQ0CxmqvfbjLTQRU3y0iSA8o
- TLSH
  T14FA49E15B3E444B9E06AD174CA534642DB76B4920F69FBDF03A492392F37BE85B39320
- MD5 SHA1 SHA512 SSDEEP TLSH
Score

1^/10
behavioral16
- Target
  libGLESv2.dll
- Size 8.0MB
- SHA256 4b4dcbc7bb19449ec89d2bf06e7b05af9352a4e6f97f4444183dc3080e6c0f1d
- MD5 a3bf08772053b66ec34701037f120736
- SHA1 b1b8d9e35d9ea517fe435f33056e8d2ff868cc6e
- SHA512 67b294ddcbc1b26c65c252ebfb1d770b81df380e27b2b9d95be6d540c6c017ca7d5f700e42e6b41dcc52866f3b32382e3b88b585cf5793e5decb5d905d2fb539
- SSDEEP 98304:O9aDUngXCAFxUrAYF8V3tcUl1XMX43vlOA:OCO5k33X4svl
- TLSH
  T1CB867C03F69580D9D00DE2B9975B9627FA3078840728B6CF269417192F7BFE0AB7E714
- MD5 SHA1 SHA512 SSDEEP TLSH
Score

1^/10
behavioral17
- Target
  resources/elevate.exe
- Size 105KB
- SHA256 9b1fbf0c11c520ae714af8aa9af12cfd48503eedecd7398d8992ee94d1b4dc37
- MD5 792b92c8ad13c46f27c7ced0810694df
- SHA1 d8d449b92de20a57df722df46435ba4553ecc802
- SHA512 6c247254dc18ed81213a978cce2e321d6692848c64307097d2c43432a42f4f4f6d3cf22fb92610dfa8b7b16a5f1d94e9017cf64f88f2d08e79c0fe71a9121e40
- SSDEEP 3072:1bLnrwQoRDtdMMgSXiFJWcIgUVCfRjV/GrWl:1PrwRhte1XsE1l
- TLSH
  T1EBB37C1274C0C471E5732A361974CAB14AADFD700E759FAF6398127A4FA01D09A3AFB7
- MD5 SHA1 SHA512 SSDEEP TLSH
Score

3^/10

discovery
behavioral18 behavioral19
- Target
  resources/frpc/frpc.exe
- Size 15.9MB
- SHA256 c9c59f9bb99561405b81d68f688384aec49369df10489044315292b0eaac957a
- MD5 37c41b57320cb17558979422a01d1b2d
- SHA1 e06cdef05c3647ff33b69f36d857f474573aa259
- SHA512 d7b54aadd5cda4e175772081fa11f7d435ee884bde0770b5c452a2c9061c7eba6bc6996825f4f3eeb47f61d2f5339c9b3e4e041dab6d8b8a3906716c0677e1a9
- SSDEEP 98304:Wbk525smj2Q6I2LDHY4Ilr5/TcXBH4akiPxolG/a+LyklOJnH9nd4J+XSGE:WAz8sLY4IV5/TCPPxNLyklOji+Cj
- TLSH
  T178F64A47ECA104E9C1A9E27486769223BB707C895F2123D72B60F7243F76BD0AE79750
- MD5 SHA1 SHA512 SSDEEP TLSH
Score

1^/10
behavioral20 behavioral21
- Target
  vk_swiftshader.dll
- Size 5.3MB
- SHA256 409a0fa76f055a87ae70434414586d144502beb25fa3004866ee70abd9a8547e
- MD5 5633d5211bfbbbd2b0493fcbd492f5fa
- SHA1 9ad2466751880fa0acc1dc6af2693d975dd9e307
- SHA512 8eb5ab1ddb1dc42eb323a163af6b4521acea5194909ed39933710bf3fecec5f50f070c20df57a89f4528076fbddb0fa0c27de3faa7b4a249637be00ec3bf396d
- SSDEEP 49152:YaNFNu2naDoYXAqk7ZSrblOR5HAlUDv/FelNotSOnaHJcF5C7d6mrI0VI2fa2E+B:762naMskwtEMaQPJnymh
- TLSH
  T1AB463803F2858099F05DE579875BA623F632B8811B72B6DF52A01F192E77FE06B39701
- MD5 SHA1 SHA512 SSDEEP TLSH
Score

1^/10
behavioral22
- Target
  vulkan-1.dll
- Size 874KB
- SHA256 f6c99137c3d6af45bc2262815867d6d37f5dcb0552caffc90cd77fb6561b7491
- MD5 a6e115dcfb063d0c06f8bef721166b37
- SHA1 8a548affa209f561e7eb8f51d5515aaec8c7bc59
- SHA512 ec5715c005cd2bec8ef2ed5af16c041d56d5e1175342c285e4c2d693a88cc86bebe83ec7d59ba3c37b91f1b5e99879532aae9a7fe68fe7ab2c758d649e034062
- SSDEEP 24576:l4cMT4Bv88wonwyHp9zDp6Z5WjDYsHy6g3P0zAk7TKr:l4bo3/nwyPzDp6Z5WjDYsHy6g3P0zAkP
- TLSH
  T1E8157C23E6648669E4768034C9D24A03C9F274921725B9CF02A84718BF6FFF47B7DB25
- MD5 SHA1 SHA512 SSDEEP TLSH
Score

1^/10
behavioral23
- Target
  $PLUGINSDIR/nsDialogs.dll
- Size 9KB
- SHA256 1e40211af65923c2f4fd02ce021458a7745d28e2f383835e3015e96575632172
- MD5 466179e1c8ee8a1ff5e4427dbb6c4a01
- SHA1 eb607467009074278e4bd50c7eab400e95ae48f7
- SHA512 7508a29c722d45297bfb090c8eb49bd1560ef7d4b35413f16a8aed62d3b1030a93d001a09de98c2b9fea9acf062dc99a7278786f4ece222e7436b261d14ca817
- SSDEEP 192:olsHeylO012En8pqHtcE0PuAgkOyvIFc:oATI0d8pUP0WAgkBvIFc
- TLSH
  T1D0120892E6E450B3C5D6133F35AE2B2DCBBD5329B0922C0087738E4979795B66E38347
- MD5 SHA1 SHA512 SSDEEP TLSH
Score

3^/10

discovery
behavioral24 behavioral25
- Target
  $PLUGINSDIR/nsExec.dll
- Size 6KB
- SHA256 5d9ceb1ce5f35aea5f9e5a0c0edeeec04dfefe0c77890c80c70e98209b58b962
- MD5 ec0504e6b8a11d5aad43b296beeb84b2
- SHA1 91b5ce085130c8c7194d66b2439ec9e1c206497c
- SHA512 3f918f1b47e8a919cbe51eb17dc30acc8cfc18e743a1bae5b787d0db7d26038dc1210be98bf5ba3be8d6ed896dbbd7ac3d13e66454a98b2a38c7e69dad30bb57
- SSDEEP 96:YjHFiKaoggCtJzTlKXb0tbo68qD853Ns7GgmkNq3m+s:JbogRtJzTlNR8qD85uGgmkNr
- TLSH
  T173D109B836C20CF3D54E46743E22381713FEE4761B7502A18B976ED61D92AE2FE20781
- MD5 SHA1 SHA512 SSDEEP TLSH
Score

3^/10

discovery
behavioral26 behavioral27
- Target
  $PLUGINSDIR/nsis7z.dll
- Size 424KB
- SHA256 b393f05e8ff919ef071181050e1873c9a776e1a0ae8329aefff7007d0cadf592
- MD5 80e44ce4895304c6a3a831310fbf8cd0
- SHA1 36bd49ae21c460be5753a904b4501f1abca53508
- SHA512 c8ba7b1f9113ead23e993e74a48c4427ae3562c1f6d9910b2bbe6806c9107cf7d94bc7d204613e4743d0cd869e00dafd4fb54aad1e8adb69c553f3b9e5bc64df
- SSDEEP 6144:aUWQQ5O3fz0NG3ucDaEUTWfk+ZA0NrCL/k+uyoyBOX1okfW7w+Pfzqibckl:an5QEG39fPAkrE4yrBOXDfaNbck
- TLSH
  T1E9949E22B6D2C036C56E02309918F77921AEB3B1592DDB1B73985B6F7FB44C19E24B07
- MD5 SHA1 SHA512 SSDEEP TLSH
Score

3^/10

discovery
behavioral28 behavioral29
- Target
  $R0/Uninstall Fluffy Client.exe
- Size 155KB
- SHA256 d88b470f58a0c3cf7cef5c299f454f897499adef7a7f41bfb55e5e68472cab95
- MD5 62504c8c7190552a644ce908b576ba79
- SHA1 58a7ba972561562e09f663215451ae4935a06ed2
- SHA512 e422f187c8e47e5a3386068553f709375b5e859bc1536332cd9a6e2bb5d05b4a88492edf3cb5c4e7c94907a2d11072b2a09c159dd333c42f9a5e0c1fe596b2bb
- SSDEEP 3072:in77v00hEoDEtauJ3vgAako/q5y8yeHJoMya2MNUa8b32tvhOEA1RJCir86SrSrf:i740IZ4JVAjy2Ua8T2t0EyL+ya6
- TLSH
  T1E2F3F101BBB1C963E1FB4F3147B687EB2FB2B51128394B433B84662D39A6285DD1D352
- MD5 SHA1 SHA512 SSDEEP TLSH
Score

7^/10

discovery execution
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE
- Loads dropped DLL
- Discovers running processes
  Running process information can be used to identify security tools or plan follow-on actions.
  discovery
behavioral30 behavioral31
- Target
  $PLUGINSDIR/StdUtils.dll
- Size 100KB
- SHA256 b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e
- MD5 c6a6e03f77c313b267498515488c5740
- SHA1 3d49fc2784b9450962ed6b82b46e9c3c957d7c15
- SHA512 9870c5879f7b72836805088079ad5bbafcb59fc3d9127f2160d4ec3d6e88d3cc8ebe5a9f5d20a4720fe6407c1336ef10f33b2b9621bc587e930d4cbacf337803
- SSDEEP 3072:WNuZmJ9TDP3ahD2TF7Rq9cJNPhF9vyHf:WNuZ81zaAFHhF9v
- TLSH
  T125A33B62A2FA9CF5E4E70B3D1469BB264CBB7B383431D93F2342054B8534586DA2D35B
- MD5 SHA1 SHA512 SSDEEP TLSH
Score

3^/10

discovery
behavioral32

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Browser Information Discovery

T1217

Process Discovery

T1057

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Time Discovery

T1124

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks

Sharing

General

Malware Config

Targets

Checks computer location settings

Executes dropped EXE

Loads dropped DLL

Reverse proxy tool: FRP aka Fast Reverse Proxy

Checks installed software on the system

Discovers running processes

Checks computer location settings

Checks computer location settings

Executes dropped EXE

Loads dropped DLL

Discovers running processes

MITRE ATT&CK Enterprise v16

Tasks

static1

behavioral1

behavioral2

behavioral3

behavioral4

behavioral5

behavioral6

behavioral7

behavioral8

behavioral9

behavioral10

behavioral11

behavioral12

behavioral13

behavioral14

behavioral15

behavioral16

behavioral17

behavioral18

behavioral19

behavioral20

behavioral21

behavioral22

behavioral23

behavioral24

behavioral25

behavioral26

behavioral27

behavioral28

behavioral29

behavioral30

behavioral31

behavioral32