d9cd6884ad7518018efaa52cde9c0ed46fba959e9ea093c97e68004dbf2cad66

Analysis

max time kernel
840s
max time network
848s
platform
windows7_x64
resource
win7-20240704-es
resource tags

arch:x64arch:x86image:win7-20240704-eslocale:es-esos:windows7-x64systemwindows
submitted
16-07-2024 20:49

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General

Target

winAPI.exe
Size

28.5MB
MD5

a6c1b27e646cf5904a69e45ffc8808d5
SHA1

7cbafd874594bf3ee91cc49d7fa8ec686b4cad80
SHA256

d9cd6884ad7518018efaa52cde9c0ed46fba959e9ea093c97e68004dbf2cad66
SHA512

b55adebe3be59f15eb66a80d2b328d20e3a7fb1aa8d666e37195855f0a510e9abaefe0ad58ec20e14b1d3426995c9e54c6fe9491704db44931a2777eb5e8c2c8
SSDEEP

393216:Em+sFHI7EzNFAUYl8XRQo/gCcT5NB35jmxEsYAwD6UWsNWcxjQl:Em+GCl3nNWclM

Score

7^/10

pyinstaller upx

Malware Config

Signatures

Executes dropped EXE 5 IoCs

pid	Process
2764	ruvwpm.exe
1588	ruvwpm.exe
1260	Process not Found
2124	lleuum.exe
2192	lleuum.exe

Loads dropped DLL 19 IoCs

pid	Process
2076	cmd.exe
2764	ruvwpm.exe
1588	ruvwpm.exe
1588	ruvwpm.exe
1588	ruvwpm.exe
1588	ruvwpm.exe
1588	ruvwpm.exe
1588	ruvwpm.exe
1588	ruvwpm.exe
1472	cmd.exe
2124	lleuum.exe
2192	lleuum.exe
2192	lleuum.exe
2192	lleuum.exe
2192	lleuum.exe
2192	lleuum.exe
2192	lleuum.exe
2192	lleuum.exe
1260	Process not Found

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/files/0x000500000001a759-100.dat	upx
behavioral1/files/0x000300000001d20d-1387.dat	upx

Detects Pyinstaller 1 IoCs

pyinstaller

resource	yara_rule
behavioral1/files/0x00070000000186bb-1.dat	pyinstaller

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2192	lleuum.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3048 wrote to memory of 2076	3048	winAPI.exe	31
PID 3048 wrote to memory of 2076	3048	winAPI.exe	31
PID 3048 wrote to memory of 2076	3048	winAPI.exe	31
PID 2076 wrote to memory of 2764	2076	cmd.exe	33
PID 2076 wrote to memory of 2764	2076	cmd.exe	33
PID 2076 wrote to memory of 2764	2076	cmd.exe	33
PID 2764 wrote to memory of 1588	2764	ruvwpm.exe	34
PID 2764 wrote to memory of 1588	2764	ruvwpm.exe	34
PID 2764 wrote to memory of 1588	2764	ruvwpm.exe	34
PID 3048 wrote to memory of 1472	3048	winAPI.exe	35
PID 3048 wrote to memory of 1472	3048	winAPI.exe	35
PID 3048 wrote to memory of 1472	3048	winAPI.exe	35
PID 1472 wrote to memory of 2124	1472	cmd.exe	37
PID 1472 wrote to memory of 2124	1472	cmd.exe	37
PID 1472 wrote to memory of 2124	1472	cmd.exe	37
PID 2124 wrote to memory of 2192	2124	lleuum.exe	38
PID 2124 wrote to memory of 2192	2124	lleuum.exe	38
PID 2124 wrote to memory of 2192	2124	lleuum.exe	38

C:\Users\Admin\AppData\Local\Temp\winAPI.exe
"C:\Users\Admin\AppData\Local\Temp\winAPI.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3048
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /d /s /c "start C:\Users\Admin\AppData\Local\Temp\ruvwpm.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2076
- - C:\Users\Admin\AppData\Local\Temp\ruvwpm.exe
    C:\Users\Admin\AppData\Local\Temp\ruvwpm.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:2764
  - - C:\Users\Admin\AppData\Local\Temp\ruvwpm.exe
      C:\Users\Admin\AppData\Local\Temp\ruvwpm.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:1588
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /d /s /c "start C:\Users\Admin\AppData\Local\Temp\lleuum.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1472
- - C:\Users\Admin\AppData\Local\Temp\lleuum.exe
    C:\Users\Admin\AppData\Local\Temp\lleuum.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:2124
  - - C:\Users\Admin\AppData\Local\Temp\lleuum.exe
      C:\Users\Admin\AppData\Local\Temp\lleuum.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Suspicious behavior: GetForegroundWindowSpam
      PID:2192

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\_MEI21242\python312.dll

Filesize
1.7MB

MD5
73ecc8d4decf6f198d6505bde482e37a

SHA1
ed30f5bd628b4a5de079062ea9b909b99807021c

SHA256
b598545be6c99f7db852a510768ecf80ed353fad3989af342bc6faf66fd64648

SHA512
56923c477d35680aed73980e0404768f841da868ca11f39888caff0fc06f4ae906551b4bd47f98dda2cc2d81ea9eed17fa7c17aa59d4d7c37510ba24d7ac5976

Download Submit
C:\Users\Admin\AppData\Local\Temp\_MEI21242\ucrtbase.dll

Filesize
1011KB

MD5
849959a003fa63c5a42ae87929fcd18b

SHA1
d1b80b3265e31a2b5d8d7da6183146bbd5fb791b

SHA256
6238cbfe9f57c142b75e153c399c478d492252fda8cb40ee539c2dcb0f2eb232

SHA512
64958dabdb94d21b59254c2f074db5d51e914ddbc8437452115dff369b0c134e50462c3fdbbc14b6fa809a6ee19ab2fb83d654061601cc175cddcb7d74778e09

Download Submit
\Users\Admin\AppData\Local\Temp\_MEI21242\api-ms-win-core-file-l1-2-0.dll

Filesize
11KB

MD5
5a72a803df2b425d5aaff21f0f064011

SHA1
4b31963d981c07a7ab2a0d1a706067c539c55ec5

SHA256
629e52ba4e2dca91b10ef7729a1722888e01284eed7dda6030d0a1ec46c94086

SHA512
bf44997c405c2ba80100eb0f2ff7304938fc69e4d7ae3eac52b3c236c3188e80c9f18bda226b5f4fde0112320e74c198ad985f9ffd7cea99aca22980c39c7f69

Download Submit
\Users\Admin\AppData\Local\Temp\_MEI21242\api-ms-win-core-file-l2-1-0.dll

Filesize
11KB

MD5
721b60b85094851c06d572f0bd5d88cd

SHA1
4d0ee4d717aeb9c35da8621a545d3e2b9f19b4e7

SHA256
dac867476caa42ff8df8f5dfe869ffd56a18dadee17d47889afb69ed6519afbf

SHA512
430a91fcecde4c8cc4ac7eb9b4c6619243ab244ee88c34c9e93ca918e54bd42b08aca8ea4475d4c0f5fa95241e4aacb3206cbae863e92d15528c8e7c9f45601b

Download Submit
\Users\Admin\AppData\Local\Temp\_MEI21242\api-ms-win-core-localization-l1-2-0.dll

Filesize
14KB

MD5
1ed0b196ab58edb58fcf84e1739c63ce

SHA1
ac7d6c77629bdee1df7e380cc9559e09d51d75b7

SHA256
8664222823e122fca724620fd8b72187fc5336c737d891d3cef85f4f533b8de2

SHA512
e1fa7f14f39c97aaa3104f3e13098626b5f7cfd665ba52dcb2312a329639aaf5083a9177e4686d11c4213e28acc40e2c027988074b6cc13c5016d5c5e9ef897b

Download Submit
\Users\Admin\AppData\Local\Temp\_MEI21242\api-ms-win-core-processthreads-l1-1-1.dll

Filesize
11KB

MD5
7e8b61d27a9d04e28d4dae0bfa0902ed

SHA1
861a7b31022915f26fb49c79ac357c65782c9f4b

SHA256
1ef06c600c451e66e744b2ca356b7f4b7b88ba2f52ec7795858d21525848ac8c

SHA512
1c5b35026937b45beb76cb8d79334a306342c57a8e36cc15d633458582fc8f7d9ab70ace7a92144288c6c017f33ecfc20477a04432619b40a21c9cda8d249f6d

Download Submit
\Users\Admin\AppData\Local\Temp\_MEI21242\api-ms-win-core-timezone-l1-1-0.dll

Filesize
11KB

MD5
91a2ae3c4eb79cf748e15a58108409ad

SHA1
d402b9df99723ea26a141bfc640d78eaf0b0111b

SHA256
b0eda99eabd32fefecc478fd9fe7439a3f646a864fdab4ec3c1f18574b5f8b34

SHA512
8527af610c1e2101b6f336a142b1a85ac9c19bb3af4ad4a245cfb6fd602dc185da0f7803358067099475102f3a8f10a834dc75b56d3e6ded2ed833c00ad217ed

Download Submit
\Users\Admin\AppData\Local\Temp\_MEI27642\api-ms-win-core-file-l1-2-0.dll

Filesize
21KB

MD5
1c58526d681efe507deb8f1935c75487

SHA1
0e6d328faf3563f2aae029bc5f2272fb7a742672

SHA256
ef13dce8f71173315dfc64ab839b033ab19a968ee15230e9d4d2c9d558efeee2

SHA512
8edb9a0022f417648e2ece9e22c96e2727976332025c3e7d8f15bcf6d7d97e680d1bf008eb28e2e0bd57787dcbb71d38b2deb995b8edc35fa6852ab1d593f3d1

Download Submit
\Users\Admin\AppData\Local\Temp\_MEI27642\api-ms-win-core-file-l2-1-0.dll

Filesize
18KB

MD5
bfffa7117fd9b1622c66d949bac3f1d7

SHA1
402b7b8f8dcfd321b1d12fc85a1ee5137a5569b2

SHA256
1ea267a2e6284f17dd548c6f2285e19f7edb15d6e737a55391140ce5cb95225e

SHA512
b319cc7b436b1be165cdf6ffcab8a87fe29de78f7e0b14c8f562be160481fb5483289bd5956fdc1d8660da7a3f86d8eede35c6cc2b7c3d4c852decf4b2dcdb7f

Download Submit
\Users\Admin\AppData\Local\Temp\_MEI27642\api-ms-win-core-localization-l1-2-0.dll

Filesize
21KB

MD5
724223109e49cb01d61d63a8be926b8f

SHA1
072a4d01e01dbbab7281d9bd3add76f9a3c8b23b

SHA256
4e975f618df01a492ae433dff0dd713774d47568e44c377ceef9e5b34aad1210

SHA512
19b0065b894dc66c30a602c9464f118e7f84d83010e74457d48e93aaca4422812b093b15247b24d5c398b42ef0319108700543d13f156067b169ccfb4d7b6b7c

Download Submit
\Users\Admin\AppData\Local\Temp\_MEI27642\api-ms-win-core-processthreads-l1-1-1.dll

Filesize
21KB

MD5
517eb9e2cb671ae49f99173d7f7ce43f

SHA1
4ccf38fed56166ddbf0b7efb4f5314c1f7d3b7ab

SHA256
57cc66bf0909c430364d35d92b64eb8b6a15dc201765403725fe323f39e8ac54

SHA512
492be2445b10f6bfe6c561c1fc6f5d1af6d1365b7449bc57a8f073b44ae49c88e66841f5c258b041547fcd33cbdcb4eb9dd3e24f0924db32720e51651e9286be

Download Submit
\Users\Admin\AppData\Local\Temp\_MEI27642\api-ms-win-core-timezone-l1-1-0.dll

Filesize
21KB

MD5
d12403ee11359259ba2b0706e5e5111c

SHA1
03cc7827a30fd1dee38665c0cc993b4b533ac138

SHA256
f60e1751a6ac41f08e46480bf8e6521b41e2e427803996b32bdc5e78e9560781

SHA512
9004f4e59835af57f02e8d9625814db56f0e4a98467041da6f1367ef32366ad96e0338d48fff7cc65839a24148e2d9989883bcddc329d9f4d27cae3f843117d0

Download Submit
\Users\Admin\AppData\Local\Temp\_MEI27642\python311.dll

Filesize
1.6MB

MD5
db09c9bbec6134db1766d369c339a0a1

SHA1
c156d9f2d0e80b4cf41794cd9b8b1e8a352e0a0b

SHA256
b1aac1e461174bbae952434e4dac092590d72b9832a04457c94bd9bb7ee8ad79

SHA512
653a7fff6a2b6bffb9ea2c0b72ddb83c9c53d555e798eea47101b0d932358180a01af2b9dab9c27723057439c1eaffb8d84b9b41f6f9cd1c3c934f1794104d45

Download Submit
\Users\Admin\AppData\Local\Temp\_MEI27642\ucrtbase.dll

Filesize
992KB

MD5
0e0bac3d1dcc1833eae4e3e4cf83c4ef

SHA1
4189f4459c54e69c6d3155a82524bda7549a75a6

SHA256
8a91052ef261b5fbf3223ae9ce789af73dfe1e9b0ba5bdbc4d564870a24f2bae

SHA512
a45946e3971816f66dd7ea3788aacc384a9e95011500b458212dc104741315b85659e0d56a41570731d338bdf182141c093d3ced222c007038583ceb808e26fd

Download Submit
\Users\Admin\AppData\Local\Temp\ruvwpm.exe

Filesize
11.6MB

MD5
19ee0c62d058248939477b1820914f2a

SHA1
27e2456ec9032f75c60408090227b3f4d988b2d0

SHA256
da789a7653878711e481cbb64cd70506ef0722fea35c4aef8c0f937c6d859544

SHA512
77251640b494a4757dbbc69414b43897f6b5f43169b6ab5ba7d0b60c4e0cefa18099c6fa8d42901ead2624b32207a227aa73bfd1871f3e50ce0219d7ba4408aa

Download Submit
memory/1588-102-0x000007FEF5880000-0x000007FEF5E68000-memory.dmp

Filesize
5.9MB

Download
memory/2192-1389-0x000007FEF57A0000-0x000007FEF5E65000-memory.dmp

Filesize
6.8MB

Download
memory/2192-1391-0x000007FEF57A0000-0x000007FEF5E65000-memory.dmp

Filesize
6.8MB

Download