nymaim | 5719014741a52b2f33b20ff98a16f00f993cc88f2d3780ec36d1217698c34e79

Analysis

max time kernel
53s
max time network
54s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
12-01-2023 02:50

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General

Target

file.exe
Size

1.4MB
MD5

ca90601142322919132754580343a814
SHA1

aa69926637308216f17ddf78a9cdb2efa8f4ba52
SHA256

5719014741a52b2f33b20ff98a16f00f993cc88f2d3780ec36d1217698c34e79
SHA512

8b168bc2ba25ab6fddbac7fdecd86ba106e73f7dac12f26b313012c8868b5f0251c086b2b249550211f4174fc01864da9252a27ba71904ad8854abde7ddbf378
SSDEEP

24576:q20IvwVcYQlaAOh2j54WCfTReU4tbs5JA1GN+jOdzVz5gXC75ld1qSVpk:q2oiYQlaAjXCfTReU4w5JwGhxVzRd1qP

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
1400	file.tmp
1204	LitFiles137.exe
680	XFdp0Ws.exe

Loads dropped DLL 6 IoCs

pid	Process
1648	file.exe
1400	file.tmp
1400	file.tmp
1400	file.tmp
1400	file.tmp
1204	LitFiles137.exe

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)\Split Files\is-HT0LN.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Split Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-3FB0F.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-25TRQ.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-U43IR.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-1AO8C.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Split Files\LitFiles137.exe	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-335PK.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-CAB41.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-NIO3P.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-SEHPP.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Split Files\is-EF24P.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-Q7SDT.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-8L5KM.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-I67M9.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-HS5MI.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
1556	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1204	LitFiles137.exe
1204	LitFiles137.exe
1204	LitFiles137.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1556	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1648 wrote to memory of 1400	1648	file.exe	28
PID 1648 wrote to memory of 1400	1648	file.exe	28
PID 1648 wrote to memory of 1400	1648	file.exe	28
PID 1648 wrote to memory of 1400	1648	file.exe	28
PID 1648 wrote to memory of 1400	1648	file.exe	28
PID 1648 wrote to memory of 1400	1648	file.exe	28
PID 1648 wrote to memory of 1400	1648	file.exe	28
PID 1400 wrote to memory of 1204	1400	file.tmp	29
PID 1400 wrote to memory of 1204	1400	file.tmp	29
PID 1400 wrote to memory of 1204	1400	file.tmp	29
PID 1400 wrote to memory of 1204	1400	file.tmp	29
PID 1204 wrote to memory of 680	1204	LitFiles137.exe	30
PID 1204 wrote to memory of 680	1204	LitFiles137.exe	30
PID 1204 wrote to memory of 680	1204	LitFiles137.exe	30
PID 1204 wrote to memory of 680	1204	LitFiles137.exe	30
PID 1204 wrote to memory of 1872	1204	LitFiles137.exe	33
PID 1204 wrote to memory of 1872	1204	LitFiles137.exe	33
PID 1204 wrote to memory of 1872	1204	LitFiles137.exe	33
PID 1204 wrote to memory of 1872	1204	LitFiles137.exe	33
PID 1872 wrote to memory of 1556	1872	cmd.exe	35
PID 1872 wrote to memory of 1556	1872	cmd.exe	35
PID 1872 wrote to memory of 1556	1872	cmd.exe	35
PID 1872 wrote to memory of 1556	1872	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1648
- C:\Users\Admin\AppData\Local\Temp\is-4UIMQ.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-4UIMQ.tmp\file.tmp" /SL5="$70124,1206962,212992,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:1400
- - C:\Program Files (x86)\Split Files\LitFiles137.exe
    "C:\Program Files (x86)\Split Files\LitFiles137.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1204
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\XFdp0Ws.exe
      4⤵
      Executes dropped EXE
      PID:680
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "LitFiles137.exe" /f & erase "C:\Program Files (x86)\Split Files\LitFiles137.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1872
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "LitFiles137.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1556

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)\Split Files\LitFiles137.exe

Filesize
1.9MB

MD5
dc6eddea60a7cae781aa101741c434b0

SHA1
0e9a9b6641621abe6cfb59dd8857137e3531570e

SHA256
6ac8cc1a478c18896d2510c1a542f4d99269f25d78444f8be4599dd1ae25bff2

SHA512
77cf40a316eb23eb444679c599a69dc748b07732dd4d81a4fc1637a0c076b65afcd9a3c73fdc9c6c448140a29c07ed0e791c0bf39ae15b38e7e437aeae0d30a9

Download Submit
C:\Program Files (x86)\Split Files\LitFiles137.exe

Filesize
1.9MB

MD5
dc6eddea60a7cae781aa101741c434b0

SHA1
0e9a9b6641621abe6cfb59dd8857137e3531570e

SHA256
6ac8cc1a478c18896d2510c1a542f4d99269f25d78444f8be4599dd1ae25bff2

SHA512
77cf40a316eb23eb444679c599a69dc748b07732dd4d81a4fc1637a0c076b65afcd9a3c73fdc9c6c448140a29c07ed0e791c0bf39ae15b38e7e437aeae0d30a9

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

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

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

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\XFdp0Ws.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\Split Files\LitFiles137.exe

Filesize
1.9MB

MD5
dc6eddea60a7cae781aa101741c434b0

SHA1
0e9a9b6641621abe6cfb59dd8857137e3531570e

SHA256
6ac8cc1a478c18896d2510c1a542f4d99269f25d78444f8be4599dd1ae25bff2

SHA512
77cf40a316eb23eb444679c599a69dc748b07732dd4d81a4fc1637a0c076b65afcd9a3c73fdc9c6c448140a29c07ed0e791c0bf39ae15b38e7e437aeae0d30a9

Download Submit
\Users\Admin\AppData\Local\Temp\is-4UIMQ.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
\Users\Admin\AppData\Local\Temp\is-QV5SC.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-QV5SC.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-QV5SC.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\XFdp0Ws.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1204-70-0x0000000000400000-0x00000000013EA000-memory.dmp

Filesize
15.9MB

Download
memory/1204-82-0x0000000000400000-0x00000000013EA000-memory.dmp

Filesize
15.9MB

Download
memory/1204-85-0x0000000000400000-0x00000000013EA000-memory.dmp

Filesize
15.9MB

Download
memory/1204-71-0x0000000000400000-0x00000000013EA000-memory.dmp

Filesize
15.9MB

Download
memory/1204-73-0x0000000000400000-0x00000000013EA000-memory.dmp

Filesize
15.9MB

Download
memory/1204-77-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1400-81-0x0000000003630000-0x000000000461A000-memory.dmp

Filesize
15.9MB

Download
memory/1400-69-0x0000000003630000-0x000000000461A000-memory.dmp

Filesize
15.9MB

Download
memory/1648-68-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/1648-54-0x00000000764C1000-0x00000000764C3000-memory.dmp

Filesize
8KB

Download
memory/1648-86-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/1648-55-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download