nymaim | 3207c8af483747db05cc73241d48ce5d6fa205a6886a260e502f1d97c8039302

Analysis

max time kernel
52s
max time network
54s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
08-01-2023 11:32

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General

Target

file.exe
Size

1.8MB
MD5

3b3fb82ea8fe4b322df9f6054d3cb912
SHA1

9019f100f73543f67fa37a4f284d700784f7dc68
SHA256

3207c8af483747db05cc73241d48ce5d6fa205a6886a260e502f1d97c8039302
SHA512

ba0f4f14f0d40d9e65aba6438b4eea6433e43b00ca0fce24d19085c1d9e2ca660d526d496a258eeb719a8afcd5d72f8bac4550eaa577222664fd12696d752379
SSDEEP

49152:y2+8Tr32lZfBSbsh3FbdXehYqiqADIOlmlI/m/WahOVLH:jpTr3OMubdw5w2/JhOVLH

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
1152	file.tmp
856	HitFiles134.exe
472	QRdqsff1z0RK.exe

Loads dropped DLL 6 IoCs

pid	Process
1704	file.exe
1152	file.tmp
1152	file.tmp
1152	file.tmp
1152	file.tmp
856	HitFiles134.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\language\is-UB6PR.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-IQCAL.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-Q91S5.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-KSEH1.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-I5V33.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-G35VR.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-J37AT.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-K26BG.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-PA8JN.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-9A2EC.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-4Q2H1.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Split Files\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\Split Files\HitFiles134.exe	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-DJAF5.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-8N2PT.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Split Files\is-P1M38.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
1792	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
856	HitFiles134.exe
856	HitFiles134.exe
856	HitFiles134.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1792	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1704 wrote to memory of 1152	1704	file.exe	28
PID 1704 wrote to memory of 1152	1704	file.exe	28
PID 1704 wrote to memory of 1152	1704	file.exe	28
PID 1704 wrote to memory of 1152	1704	file.exe	28
PID 1704 wrote to memory of 1152	1704	file.exe	28
PID 1704 wrote to memory of 1152	1704	file.exe	28
PID 1704 wrote to memory of 1152	1704	file.exe	28
PID 1152 wrote to memory of 856	1152	file.tmp	29
PID 1152 wrote to memory of 856	1152	file.tmp	29
PID 1152 wrote to memory of 856	1152	file.tmp	29
PID 1152 wrote to memory of 856	1152	file.tmp	29
PID 856 wrote to memory of 472	856	HitFiles134.exe	30
PID 856 wrote to memory of 472	856	HitFiles134.exe	30
PID 856 wrote to memory of 472	856	HitFiles134.exe	30
PID 856 wrote to memory of 472	856	HitFiles134.exe	30
PID 856 wrote to memory of 1476	856	HitFiles134.exe	33
PID 856 wrote to memory of 1476	856	HitFiles134.exe	33
PID 856 wrote to memory of 1476	856	HitFiles134.exe	33
PID 856 wrote to memory of 1476	856	HitFiles134.exe	33
PID 1476 wrote to memory of 1792	1476	cmd.exe	35
PID 1476 wrote to memory of 1792	1476	cmd.exe	35
PID 1476 wrote to memory of 1792	1476	cmd.exe	35
PID 1476 wrote to memory of 1792	1476	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:1704
- C:\Users\Admin\AppData\Local\Temp\is-955QO.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-955QO.tmp\file.tmp" /SL5="$70122,1665302,162304,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:1152
- - C:\Program Files (x86)\Split Files\HitFiles134.exe
    "C:\Program Files (x86)\Split Files\HitFiles134.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:856
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\QRdqsff1z0RK.exe
      4⤵
      Executes dropped EXE
      PID:472
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "HitFiles134.exe" /f & erase "C:\Program Files (x86)\Split Files\HitFiles134.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1476
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "HitFiles134.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1792

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\HitFiles134.exe

Filesize
3.2MB

MD5
9a970ccfa175c1fd6c5ecce75e553b8a

SHA1
0a8e6a435d20c42d169a74b7a6673174d38c2523

SHA256
f25e0a28ce7e6e97615506ca92782fa4cb21517f51dfd174fe1171b49850742a

SHA512
b521201272e9e7751f1bb173d8b44ed8c638bbb12238080822cbb91d73a2722dc3318c59cff6dd591ce0728cee4d6f65ee16c1b5850f3614ce4c3f9309cecd3c

Download Submit
C:\Program Files (x86)\Split Files\HitFiles134.exe

Filesize
3.2MB

MD5
9a970ccfa175c1fd6c5ecce75e553b8a

SHA1
0a8e6a435d20c42d169a74b7a6673174d38c2523

SHA256
f25e0a28ce7e6e97615506ca92782fa4cb21517f51dfd174fe1171b49850742a

SHA512
b521201272e9e7751f1bb173d8b44ed8c638bbb12238080822cbb91d73a2722dc3318c59cff6dd591ce0728cee4d6f65ee16c1b5850f3614ce4c3f9309cecd3c

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-955QO.tmp\file.tmp

Filesize
800KB

MD5
7013a53c5472267941844ed17de4de3c

SHA1
dda886aa81995da2abb763969bba86e82988db1a

SHA256
9897aed9da44b8a3c7d7cdeac2fdf2281bcd024846c77d45bc84b973abddc81e

SHA512
6b1e8845ffeda2a775370a89aaf7e7477cd6264df15da3cc7e412c282e0ccfb3719d6b08fc65190e61ec9674f5f527d939d9cd50ff9f29af37a049d04596060d

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-955QO.tmp\file.tmp

Filesize
800KB

MD5
7013a53c5472267941844ed17de4de3c

SHA1
dda886aa81995da2abb763969bba86e82988db1a

SHA256
9897aed9da44b8a3c7d7cdeac2fdf2281bcd024846c77d45bc84b973abddc81e

SHA512
6b1e8845ffeda2a775370a89aaf7e7477cd6264df15da3cc7e412c282e0ccfb3719d6b08fc65190e61ec9674f5f527d939d9cd50ff9f29af37a049d04596060d

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\QRdqsff1z0RK.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\Split Files\HitFiles134.exe

Filesize
3.2MB

MD5
9a970ccfa175c1fd6c5ecce75e553b8a

SHA1
0a8e6a435d20c42d169a74b7a6673174d38c2523

SHA256
f25e0a28ce7e6e97615506ca92782fa4cb21517f51dfd174fe1171b49850742a

SHA512
b521201272e9e7751f1bb173d8b44ed8c638bbb12238080822cbb91d73a2722dc3318c59cff6dd591ce0728cee4d6f65ee16c1b5850f3614ce4c3f9309cecd3c

Download Submit
\Users\Admin\AppData\Local\Temp\is-955QO.tmp\file.tmp

Filesize
800KB

MD5
7013a53c5472267941844ed17de4de3c

SHA1
dda886aa81995da2abb763969bba86e82988db1a

SHA256
9897aed9da44b8a3c7d7cdeac2fdf2281bcd024846c77d45bc84b973abddc81e

SHA512
6b1e8845ffeda2a775370a89aaf7e7477cd6264df15da3cc7e412c282e0ccfb3719d6b08fc65190e61ec9674f5f527d939d9cd50ff9f29af37a049d04596060d

Download Submit
\Users\Admin\AppData\Local\Temp\is-N4MU9.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-N4MU9.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-N4MU9.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}\QRdqsff1z0RK.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/472-75-0x0000000000000000-mapping.dmp

Download
memory/856-71-0x0000000000400000-0x000000000152D000-memory.dmp

Filesize
17.2MB

Download
memory/856-82-0x0000000000400000-0x000000000152D000-memory.dmp

Filesize
17.2MB

Download
memory/856-85-0x0000000000400000-0x000000000152D000-memory.dmp

Filesize
17.2MB

Download
memory/856-72-0x0000000000400000-0x000000000152D000-memory.dmp

Filesize
17.2MB

Download
memory/856-73-0x0000000000400000-0x000000000152D000-memory.dmp

Filesize
17.2MB

Download
memory/856-67-0x0000000000000000-mapping.dmp

Download
memory/856-77-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1152-58-0x0000000000000000-mapping.dmp

Download
memory/1152-81-0x0000000003600000-0x000000000472D000-memory.dmp

Filesize
17.2MB

Download
memory/1152-70-0x0000000003600000-0x000000000472D000-memory.dmp

Filesize
17.2MB

Download
memory/1476-83-0x0000000000000000-mapping.dmp

Download
memory/1704-66-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1704-54-0x0000000075831000-0x0000000075833000-memory.dmp

Filesize
8KB

Download
memory/1704-86-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1704-55-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1792-84-0x0000000000000000-mapping.dmp

Download